Forget road bridges. TfL should extend the London Overground to Thamesmead and Abbey Wood

The bustling transport hub that is Thamesmead town centre. Image: Darryl Chamberlain.

Listen carefully to local politicians in the east of London, and there's a low mantra you keep on hearing. A mantra of desperation.

"River crossings... jobs and investment... river crossings... jobs and investment..."

Newham's elected mayor may not be standing in Beckton, staring at Thamesmead with a tear in his eye; and the leader of Bexley Council may not be gazing over at Rainham, wondering what it'd be like to for her to be closer to the marshes there.

But getting between east and south-east London can be a pain, whether by road or rail. The River Thames widens dramatically once you pass Woolwich, and the communities on either side of the water have very little to do with each other.

That simple fact of geography has always been with us as London has grown. But in the recent years, it's been blamed for low employment levels in these riverside communities.

In this narrative, the area's problems have little to do with the decline of established industries – the Royal Arsenal, the docks, the Ford car plant at Dagenham – and the lack of new employment to replace them.

Neither does it have anything to do with London's politicians building a whole new town on the south bank – Thamesmead – with utterly inadequate public transport, leaving much of it more than a mile from a railway station. The nearest its residents get to fast, easy travel are London City Airport-bound jets roaring over their heads.

No, it's just evil geography to blame. Doing nothing is not an option, these politicians declare. But while elsewhere in London, public transport is improved and steps are promised to clean up the air, here, they want to build thumping great roads instead.

New roads would be ridiculed elsewhere

In most of the rest of London, laying down new tarmac would be met with ridicule. The capital is too scarred by memories of the London Motorway Box, which threatened to destroy now-desirable areas such as Hackney, Highbury and West Hampstead.

But south east London is a part of town that’s underneath the key on most maps. It’s always been expected to put up with second best.

Three crossings are proposed. By far the most advanced is the Silvertown Tunnel, four miles west of Thamesmead.

This road between the Greenwich Peninsula and Royal Docks – both already being redeveloped off the back of new public transport – will do little to connect areas that are currently lying dormant. Instead, it's an add-on to the Blackwall Tunnel, aimed at solving congestion there. 

But the plan is fatally flawed. It shares Blackwall’s already-congested southern approach, and is designed to allow HGVs easier access to streets north of the river.

It’s more likely to generate more traffic on its approaches and overwhelm local roads, creating new bottlenecks elsewhere and exacerbating already poor pollution problems.

Don't take my word for it – those are the findings of a report commissioned by Greenwich council. Greenwich dumped the report and supported the tunnel anyway.

But Hackney council recently passed a motion opposing it; Southwark and Lewisham councils have serious doubts about the scheme, too.

The other road crossings are planned to the east and west of Thamesmead – entrenching car dependency in an area the capital’s decision-makers created, then forgot about.

Ease demand by giving Thamesmead the Overground

Congestion is a London-wide problem, not just a parochial issue at a few bottlenecks. The Silvertown Tunnel won't do a thing to solve that. And without a serious effort to cut traffic across the capital, all of these crossings are doomed to failure.

Yet if London's ready to spend £1bn on a river crossing, then we should go easy on the tarmac. One solution would not just help ease demand on Blackwall Tunnel, but also spark interest in London’s neglected new town without putting an extra car on the roads. It's extending the London Overground, from Barking to Thamesmead and Abbey Wood.

The Gospel Oak to Barking line used to be the runt of London's railway litter, with clapped-out diesel trains wheezing their way across north-east London at miserly 45-minute frequencies.

Since 2007, it's been transformed as part of the London Overground network, with four new trains per hour, often full to bursting. Plans are afoot to electrify it and extend it onto Barking Riverside, a huge housing development by the Thames that's been on hold until decent public transport can be arranged.

That sprinkle of Overground magic is set to be the catalyst for 10,000 new homes on the brownfield site.

Yet despite the clamour for ways of making the Thames easier to cross, taking the extension on a couple of miles further, to Abbey Wood, isn’t on the agenda.

The effects would be dramatic. Thamesmead residents would be finally plugged into the London rail network for the first time since the town was founded in 1967, while Barking Riverside residents would gain an interchange with Crossrail at Abbey Wood.

Northbound traffic in the Blackwall Tunnel in the morning rush hour. The red diamonds are the vehicles' origin; blue squares its destination. The proposed Overground extension is shown in yellow. Image: TfL/Darryl Chamberlain.

It could also take pressure off the roads. A hefty chunk of Blackwall Tunnel traffic comes from Thamesmead, from people who end up driving because their current transport options are so poor. The area’s “town centre” is served only by a pair of poorly-placed bus stops.

Politicians are waking up to the idea – but they need to move fast

Why isn’t it happening already? Thamesmead and Abbey Wood are missing out because of short-term thinking at London's City Hall. Just as with the Bakerloo and Northern line extensions, the Barking Riverside extension is intended to regenerate land that has seen little development.

Creating new links to serve existing communities is at the bottom of the priority list. A Thamesmead Overground connection languishes on TfL’s wishlist for the year 2050. If London’s politicians are serious about reviving the community they forgot, they need to be pushing this up the list as soon as they can.

If only. TfL's map of the Overground in 2026, with the Thamesmead extension drawn on in crayons. Image: TfL/Darryl Chamberlain.

Some already are. Barking & Dagenham council leader Darren Rodwell was the first to call for it last year.

A petition from the No to Silvertown Tunnel campaign was followed by action from two Labour assembly members. Fiona Twycross asked if building a new station at Barking Riverside that could quickly become redundant was a waste of money, while Len Duvall suggested that an extension that didn’t cross the river was a missed opportunity.

Only a fool would pretend the puzzle of making it easier to cross the Thames is an easy one to solve. But the people of Barking and Thamesmead deserve the same sustainable solutions that are being proposed elsewhere.

Occasionally, an extension of the Docklands Light Railway is suggested for Thamesmead – usually to make one of the road bridges seem more palatable. Yet an Overground link would dramatically widen opportunities for Thamesmead’s residents to get around the capital compared with the slow and limited options provided by the already-overloaded DLR.

In May, a new mayor will have to decide what to do with Boris Johnson’s transport legacy. Whoever gets the job should ditch the £1bn Silvertown Tunnel – a project that’s doomed to failure. Instead, he or she should start putting the river crossings programme on a sustainable track, and bring the Overground to Thamesmead.

Darryl Chamberlain is a writer and one of the founders of the No To Silvertown Tunnel campaign. He blogs at 853

 
 
 
 

The IPPC report on the melting ice caps makes for terrifying reading

A Greeland iceberg, 2007. Image: Getty.

Earlier this year, the Intergovernmental Panel on Climate Change (IPCC) – the UN body responsible for communicating the science of climate breakdown – released its long-awaited Special Report on the Ocean and Cryosphere in a Changing Climate.

Based on almost 7,000 peer-reviewed research articles, the report is a cutting-edge crash course in how human-caused climate breakdown is changing our ice and oceans and what it means for humanity and the living planet. In a nutshell, the news isn’t good.

Cryosphere in decline

Most of us rarely come into contact with the cryosphere, but it is a critical part of our climate system. The term refers to the frozen parts of our planet – the great ice sheets of Greenland and Antarctica, the icebergs that break off and drift in the oceans, the glaciers on our high mountain ranges, our winter snow, the ice on lakes and the polar oceans, and the frozen ground in much of the Arctic landscape called permafrost.

The cryosphere is shrinking. Snow cover is reducing, glaciers and ice sheets are melting and permafrost is thawing. We’ve known this for most of my 25-year career, but the report highlights that melting is accelerating, with potentially disastrous consequences for humanity and marine and high mountain ecosystems.

At the moment, we’re on track to lose more than half of all the permafrost by the end of the century. Thousands of roads and buildings sit on this frozen soil – and their foundations are slowly transitioning to mud. Permafrost also stores almost twice the amount of carbon as is present in the atmosphere. While increased plant growth may be able to offset some of the release of carbon from newly thawed soils, much will be released to the atmosphere, significantly accelerating the pace of global heating.

Sea ice is declining rapidly, and an ice-free Arctic ocean will become a regular summer occurrence as things stand. Indigenous peoples who live in the Arctic are already having to change how they hunt and travel, and some coastal communities are already planning for relocation. Populations of seals, walruses, polar bears, whales and other mammals and sea birds who depend on the ice may crash if sea ice is regularly absent. And as water in its bright-white solid form is much more effective at reflecting heat from the sun, its rapid loss is also accelerating global heating.

Glaciers are also melting. If emissions continue on their current trajectory, smaller glaciers will shrink by more than 80 per cent by the end of the century. This retreat will place increasing strain on the hundreds of millions of people globally who rely on glaciers for water, agriculture, and power. Dangerous landslides, avalanches, rockfalls and floods will become increasingly normal in mountain areas.


Rising oceans, rising problems

All this melting ice means that sea levels are rising. While seas rose globally by around 15cm during the 20th century, they’re now rising more than twice as fast –- and this rate is accelerating.

Thanks to research from myself and others, we now better understand how Antarctica and Greenland’s ice sheets interact with the oceans. As a result, the latest report has upgraded its long-term estimates for how much sea level is expected to rise. Uncertainties still remain, but we’re headed for a rise of between 60 and 110cm by 2100.

Of course, sea level isn’t static. Intense rainfall and cyclones – themselves exacerbated by climate breakdown – can cause water to surge metres above the normal level. The IPCC’s report is very clear: these extreme storm surges we used to expect once per century will now be expected every year by mid-century. In addition to rapidly curbing emissions, we must invest millions to protect at-risk coastal and low-lying areas from flooding and loss of life.

Ocean ecosystems

Up to now, the ocean has taken up more than 90 per cent of the excess heat in the global climate system. Warming to date has already reduced the mixing between water layers and, as a consequence, has reduced the supply of oxygen and nutrients for marine life. By 2100 the ocean will take up five to seven times more heat than it has done in the past 50 years if we don’t change our emissions trajectory. Marine heatwaves are also projected to be more intense, last longer and occur 50 times more often. To top it off, the ocean is becoming more acidic as it continues to absorb a proportion of the carbon dioxide we emit.

Collectively, these pressures place marine life across the globe under unprecedented threat. Some species may move to new waters, but others less able to adapt will decline or even die out. This could cause major problems for communities that depend on local seafood. As it stands, coral reefs – beautiful ecosystems that support thousands of species – will be nearly totally wiped out by the end of the century.

Between the lines

While the document makes some striking statements, it is actually relatively conservative with its conclusions – perhaps because it had to be approved by the 195 nations that ratify the IPCC’s reports. Right now, I would expect that sea level rise and ice melt will occur faster than the report predicts. Ten years ago, I might have said the opposite. But the latest science is painting an increasingly grave picture for the future of our oceans and cryosphere – particularly if we carry on with “business as usual”.

The difference between 1.5°C and 2°C of heating is especially important for the icy poles, which warm much faster than the global average. At 1.5°C of warming, the probability of an ice-free September in the Arctic ocean is one in 100. But at 2°C, we’d expect to see this happening about one-third of the time. Rising sea levels, ocean warming and acidification, melting glaciers, and permafrost also will also happen faster – and with it, the risks to humanity and the living planet increase. It’s up to us and the leaders we choose to stem the rising tide of climate and ecological breakdown.

Mark Brandon, Professor of Polar Oceanography, The Open University.

This article is republished from The Conversation under a Creative Commons license. Read the original article.