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The history of the Effra River | South London’s lost waterway
Discover the story of one of London’s lost rivers, which has been driven underground.

There have been debates about whether or not the water in Belair Park in West Dulwich is from one of the Effra’s tributaries
For centuries, the River Thames wasn’t the only big expansion of water in the capital, with many rivers and streams flowing in all directions across the capital. Before water was piped around the capital, Londoners relied on their local rivers for washing, fishing… and some other less sanitary activities.
One of these London rivers was the Effra, which is now mostly subterranean. It started life as a tributary of the River Thames, and now runs through south London’s Victorian sewers. There has been much debate of the name ‘Effra’, which is believed to been first associated with the river in the late 18th century/early 19th century. English art critic John Ruskin (1819-1900), who grew up in Herne Hill, suggested the name was “doubtless shortened from Effrena, signifying the unbridled river”. Other suggestions include it originating from the Anglo Saxon word “efer” (translates as “bank”) or from the Celtic term “yfrid” (which means “torrent”). Various 18th century maps label the River as “Brixton Creek”, “The Wash” or “Shore”. Another recent suggestion is Effra is a corrupted word of “Heathrow” – the name of a 70 acre estate located south of Coldharbour Lane in Brixton. In the 1790s, the land belonging to Heathrow Manor was called Effra Farm. It’s been suggested the section running through the Brixton farm was called Effra, before being expanded to include the whole river.

A marker in West Norwood showing the course of the Effra
The course of the Effra River and its tributaries ran thorough the centre of south London (don’t take the postcodes of bordering SE and SW neighbourhoods so literally!), through Upper and West Norwood, Brixton, Herne Hill, Dulwich, Vauxhall, and Kennington. There has been much debate whether or not the lake in Belair Park in West Dulwich was made by damning one of the Effra’s tributaries in the 19th century, if so it would be the only part of the River currently visible above ground. However, the lake is just a few minutes walk from the old Croxted Road (formerly Croxted Lane), where the Effra did run through. When the river was open, it had an average width of 12ft and was around 6ft deep.
Over the centuries, the river and its tributaries were diverted. By the 18th century, the Effra was pretty filthy as rivers were commonly used for waste disposal. In the 1840s, the commissioners of Surrey and East Kent Sewers began the process of culverting the Effra. Civil engineer Sir Joseph Bazalgette (1819-1891) incorporated what was left of the open Effra into his revolutionary sewer system in the 1860s. Along the way, huge metal stink pipes were erected to safely expel the gases in the sewer. You can still spot the stink pipes dotted around south London, they look like extra tall lampposts with the light missing. While the river is now subterranean, nods to its existence remain in the local streets. For example Brixton is home to Effra Road, Effra Parade and Brixton Water Lane.
Meanwhile, in more recent times, the course of the Effra has been marked by cast iron plaques dotted throughout Lambeth. Design agency Atelier Works teamed up with local artist Faranak to design 14 different illustrations of flowing water for 30cm plaques in 2016. They can be spotted in pavements on various sites along the river’s 6 mile course. The typescript reads: “The hidden River Effra is beneath your feet.” Some of the plaques sightings include outside the Meath Estate on Dulwich Road (Herne Hill), Rosendale Road just south of the junction with the South Circular (West Dulwich), Robson Road (south side opposite No.5/6, West Norwood), the junction of Rattray Road/Mervan Road (Brixton), among others.
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📚 Further reading:
- London’s Lost River. Paul Talling, 2011.
- River Effra: South London’s Secret Spine. Jon Newman, 2016.
- London’s Hidden Rivers: A walker’s guide to the subterranean waterways of London. David Fathers, 2017.
Discovering the World War II shelter-turned-memorial at Stockwell
The history of the colourful pillbox memorial on a Stockwell traffic island.

The Stockwell deep-level shelter has been turned into a war memorial
Around the country, many a traffic island is home to a war memorial. However, one particular south London island has a rather more colourful tribute to the war dead in an unusual format. In fact, this memorial started life as an important space to shelter Londoners from the Nazi bombs during World War II.
At the junction of Clapham Road and South Lambeth Road, just moments from Stockwell tube station, is the Stockwell War Memorial. The memorial is in two parts – the oldest of the two is dedicated to the fallen of World War I, while the more recent one was built during the World War II.

Poppies cover the pillbox entrance shaft
In the early part of the Second World War, some civilians and government officials were concerned the available shelters weren’t quite robust enough to withstand the bombing. Time was of the essence so a plan to build deep-level shelters underneath existing tube stations was deemed the speediest and most cost-effective option. Originally 10 shelters were planned, but in the end only eight were constructed. Building began in 1941, and by 1942 they were complete. The shelters were mostly located by Northern line stations, including Stockwell, Clapham North, Clapham Common, Camden Town, Belsize Park, Goodge Street and Clapham South, with another near the Central line station Chancery Lane.
The Stockwell deep-level shelter is located below Stockwell station and features two parallel tunnels, measuring 16ft in diameter and split horizontally with upper and lower levels. The shelters were accessed by two, pillbox-shaped entrance shafts – one being the war memorial on Stockwell’s traffic island, and the other on Studley Road. The tunnels would have fit hundreds of beds to accommodate Londoners overnight, while there were further spaces for toilets, medical assistance and ventilation. The Stockwell shelter was completed in September 1942, but was initially used by the government until it opened to the public in 1944. With the war finishing a year later, it fortunately didn’t get much use. After V-day, the Stockwell shelter was briefly used to house military personnel.
For decades, the shelter remained an ugly eyesore on the South Lambeth Road. However, Brian Barnes and Myra Harris turned it into a war memorial in 1999. Brainstorming with schoolchildren at nearby Stockwell Park School, the images were inspired by local history. Among the famous faces pictured include actor Sir Roger Moore – who grew up in Stockwell – and artist Vincent Van Gogh, who briefly lived in nearby Hackford Road during 1873-74. It also depicts the MV Empire Windrush ship, which brought Caribbean emigrants to Britain, with many settling in Brixton and the surrounding areas. Some new arrivals ending up sleeping in a makeshift hostel in the Clapham South deep-level shelter until they found more long-term accommodation.
The mural was expanded in June 2001 with the addition of war hero and special agent Violette Szabo (1921-1945), who spent her teen years living in Stockwell. The top of the mural features a quote from Robert Laurence Binyon’s (1869-1943) poem ‘For the Fallen’, originally published in September 1914.
- The Stockwell War Memorial can be found on the roundabout at the junction of South Lambeth Road and Clapham Road, Stockwell, SW8 1UG. Nearest station: Stockwell.
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Mail Rail review | Travel under London on the Royal Mail’s underground railway

The Mail Rail is a ride on the Royal Mail’s former underground railway
We all know about the Victorian origins of the London Underground, which has been transporting commuters since 1863. However, did you know it’s not the capital’s only underground railway in existence? For eight decades, the Post Office ran their own subterranean train system to transport letters and parcels under the city’s streets. Affectionately known as the ‘Mail Rail’, it closed for good in 2003. However, in September 2017, the railway was brought back to life and adapted for human passengers as part of a new experience at the Postal Museum.
Road traffic has been a problem in London for centuries, stemming back to the days of horses and carts. For owners of the Post Office, the impact on their deliveries arriving late was not good for business so something had to be done. In 1909, a committee was set up to devise a traffic-proof delivery system, and by 1911 had settled on the idea of driverless electric trains. Construction began in 1914 with a trial tunnel in Plumstead Marshes, south-east London, with the main 6 1/2 miles of tunnels completed by 1917. By this time, World War I was in full swing so lack of labour and materials meant the project was put on hold. However, the tunnels did find some use during WWI as the National Portrait Gallery and the Tate stored some of their artworks in them for safe-keeping. Following the end of the Great War, costs of materials had risen so much, it wasn’t until 1923 that work could finally resume. Finally, on 5 December 1927, parcels were transported underground between Mount Pleasant and Paddington for the first time.

One of the former stations, where busy Royal Mail workers would be hauling carts of post to and from trains
The trains run in a single 9ft tunnel featuring a double 2ft gauge track. Approaching each station, the tunnel would split into two 7ft tunnels with a single track each. The railway’s deepest point was 70ft, although the stations tended to be slightly closer to street level. By 1930, the original rolling stock were knackered so they were replaced with new trains. These new ones featured a 27ft single car train with each container having a capacity for 15 bags of letters or six bags of parcels. These were used until they were replaced in 1980 by a new fleet. Over the decades, some of the stations came and went, including the Western Parcels Office and Western District Office, with the latter name being reused at a new station at Rathbone Place, which opened in 1965. In 1987, the train system was renamed ‘Mail Rail’ to mark its 60th anniversary. In 1993, the whole system was computerised so the trains could be controlled from a single point. By the end of the 1990s, only the stations at Paddington, Western Delivery Office, Mount Pleasant, and the East District Office were being used, carrying over 6 million bags of mail annually. However, as the system aged, Royal Mail decided it was becoming too costly to run the railway, claiming road transport was cheaper and its death warrant was signed. On 31 May 2003, the Mail Rail was closed for good.
However, now the Mail Rail had been resuscitated as an attraction at the Postal Museum. It took several years to restore the tunnels, convert the trains for passengers and to transform the space into a museum. We arrived 10 minutes before our time slot and headed downstairs to board the small train. The seats are reversible, but narrow so it could be a squeeze getting two adults seated beside each other. You’re protected from the tunnel atmosphere with clear, hard plastic windows and ceiling, although it can distort photography somewhat (admittedly, my accompanying photos aren’t too great). The 15-minute ride is accompanied by an audio tour, with sound effects and visuals and films projected on the walls of the various stations. To many who think the history of Royal Mail may not seem that interesting, I think you’ll be pleasantly surprised as the museum curators have done a great job bringing to life the story of our mail system and the Mail Rail. Following your ride, your ticket also covers entrance to the Postal Museum across the road, with many interactive exhibits for adults and children. I’d thoroughly recommend both the Mail Rail and the Postal Museum for families, history buffs or if you’re looking for something a bit different to spend your leisure time.
- Mail Rail, 15-20 Phoenix Place, WC1X 0DA. Nearest station: Angel or Russell Square. Mail Rail is open daily from 10am-5pm (last train departs at 4.30pm). Tickets: Adults £16-£17, Children 3-15 yrs £9-£10. For more information and booking, visit the Postal Museum website.

The tunnels split into two as they approach the stations
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Going underground | Exploring the Clapham South deep-level shelter with Hidden London
The history of the World War II shelter underneath Clapham South tube station.

Clapham South Deep-Level Shelter is rarely open to the public
Last month, I was fortunate enough to have a peek of one of London’s secret subterranean treasures. As part of their Hidden London series, the London Transport Museum were running tours to visit the Clapham South Deep-Level Shelter, one of the only purpose-built World War II shelters that is still accessible to the public, albeit rarely.

The sub-shelters at Clapham South were named alphabetically A-P after senior British naval officers
Following the outbreak of World War II and the subsequent Blitz, many Londoners were using tube stations as shelters from the Nazi bombing. However, many civilians were concerned the stations weren’t adequate protection, which was confirmed in October 1940 when a bomb hit the road above the north end of Balham underground station. Water from the burst sewers above and earth filled the southbound tunnel, killing 66 people who were sheltering there at the time. Three months later, a further 111 civilians were killed when a bomb hit Bank station.
The same month of the Balham disaster, the Government started making plans to build deep-level shelter accommodation for 100,000 people. Having lots of experience of building underground, it made sense for the Government to enlist London Transport to co-ordinate the project within the swiftest time possible. With Londoners frequently dying in bomb attacks by the Nazis, time was of the essence. It was decided it would be easiest and quickest to create shelters below existing tube stations, specifically the Northern and Central lines. Originally the plan was for 10 shelters to be built, however ones at St Paul’s and Oval were abandoned during construction due to concerns over being too close to the Cathedral and unsatisfactory ground quality respectively.
Construction – by hand – began on the tunnels in 1941, with final eight complete in 1942. Situated 30 metres (just under 100 foot) below ground level, the tunnels were built from either end using two vertical shafts. When they were complete, each shelter consisted of two parallel tunnels around 400 metres long divided into upper and lower floors. The tunnels at Clapham South were divided further into 16 sub-shelters with each named alphabetically after a senior British naval officer. The sub-shelters at Clapham South were named Anson, Beatty, Collingwood, Drake, Evans, Freemantle, Grenville, Hardy, Inglefield, Jelicoe, Kepple, Ley, Madden, Nelson, Oldam and Party. Each sub-shelter featured triple-tier bunk beds and some wider bunks for mothers with young children, bringing the total number of bunks to 7,952.

The existing triple-tied bunks (right) and wider bunks (left) for mothers and young children in one of the sub-shelters
By the time the shelters were ready for action so to speak, the Nazi bombing campaign on Britain had eased off. The Government ended up letting the American military use half of the Goodge Street shelter. By June 1944, Hitler’s armies had set their sights on destroying London again – albeit this time with V-1 flying bombs, followed by V-2 later that year. Finally, the shelters could be used for the purpose they were intended for.
The one tube you CAN drink on! Head underground for post-war frolics at Cahoots

Grab a seat and hold tight! A vintage tube carriage has been recreated in Cahoots
I’m always on a lookout for a bar with a difference and unlike the other themed drinking establishments in the capital, Soho‘s newest nightspot celebrates one of my favourite things – London itself. Playing up to the building’s history as a former World War II shelter, Cahoots is an underground basement bar which takes guests back in time to the 1940s. Located in Soho, Cahoots has been styled as an abandoned underground station in post-war London, where those in the know come to party.

Cheers! We enjoyed gin-infused cocktails, such as the Vera Lynn, served in a green female-shaped mug
I was lucky enough to be invited to the bar’s launch party recently as the premise really excited me. My blogging name is Metro Girl… the bar is underground themed.. surely it’s got to be a match made in heaven? The bar’s entrance is subtle from the street, but once entering and heading down the wooden escalator-style steps (which prompted flashbacks to riding the tube as a child in the ’80s) we were greeted by a doorman (who in character and in a rather spiffing accent, old chum), told us the station was ‘closed’. We played up to it and said ‘we had an appointment’ and were shown the way in. The interior of the bar is pretty amazing – along with a recreated tube carriage (where we subsequently ended up sitting in most of the night), there were vintage-style signs from both the London Underground and the post-war years. Sandbags, bunting, and waiters dressed in vintage clothing furthering the vibe. We parked ourselves in the carriage with our drinks resting on an old suitcase which doubled as a table. The theme continued through to the toilets, with 1940s street sound effects adding to the atmosphere.
The cocktail menu is extensive and unique, with influences from popular drinks from the 1940s, as well as unusual ingredients such as tea leaves, beetroot and Oxo cubes. Cocktails are served in a variety of vessels, such as tin cans, Thermos flasks and milk bottles, ranging from £7-£9. I tried quite a few cocktails, but my favourite was a ‘Vera Lynn’, a fruity gin concontion which came served in a lovely green china version of the wartime dame in her heyday. There’s also an impressive sharing cocktail for groups, the Tanqueray No.10 Station Clock, where you dish out your booze from a giant hollow clock.
As well as the interiors and cocktails, there is also great entertainment with swing bands and dancers performing on many evenings. We were encouraged to try a bit of dancing, but I politely declined over fears of making a fool of myself, but some fellow guests were game and did a good job. The music was a mix of jazz, swing and lindy-hop, so you really feel like you’ve stepped in a time machine. Although this may seem like an immersive experience, we enjoyed ourselves so much I could see Cahoots becoming a regular drinking den for me and my pals. For those looking for something a bit different for a night out, I can highly recommend Cahoots. As long as you’re looking for adventure and are open to embracing the strong theme, head underground. Just don’t tell everyone…
- Cahoots, 13 Kingly Court, Soho, W1B 5PW. Nearest tube [apart from Cahoots obviously… ;-)]: Oxford Circus. For more information, visit the Cahoots website.

Don’t tell everyone! The entrance to Cahoots feels like a real-life tube station
For more of Metro Girl’s bar and restaurant reviews, click here.
To read about Metro Girl’s visit to the disused tube station Aldwych, click here.