Greater Brighton leaders have joined the fight for much-needed investment in the “outdated and creaking” Brighton Mainline.
Tens of thousands of commuters rely on the railway route from the south coast to London every day, making it crucial to businesses and future growth of the area.

Cllr Andy Smith, chairman of Greater Brighton, and Jonathan Sharrock, of Coast to Capital, mark GBEB supporting the Brighton Main Line alliance
But, with the 1960s infrastructure creaking under record numbers of passengers, business leaders, political leaders and national voices have united under a single banner of the Brighton Mainline Alliance.
The Greater Brighton Economic Board, which represents local authorities, businesses and academia, has now signed up to the campaign and pledged to support the ongoing mission of lobbying the Chancellor and transport secretary on what benefits an upgrade would bring.
Councillor Andy Smith, chairman of Greater Brighton Economic Board, said: “The Brighton Mainline is not just a commuter line; it is an essential transport corridor which is crucial to the economic development of our City Region.
“For too long now there has been severe under-investment in the infrastructure meaning the outdated line is creaking under the pressure. Combined with the chaos brought about by the industrial dispute in recent years, the situation faced by commuters and businesses is close to unbearable.
“The time to act is now, which is why I’m delighted to say that every member of Greater Brighton is unanimous in calling for funding to improve connectivity and reliability. In turn, this will unlock greater investment and ensure we can create more jobs, more homes and greater prosperity for our 900,000 residents.”
The decision was taken at a meeting of the GBEB board this week.
Members heard how passenger journeys on Southern and Thameslink services have risen by 10% to 105 million per annum in the past five years.
With the Greater Brighton economy growing year-on-year, Network Rail predict increasingly severe crowding on trains, driven by the region’s growing economy.
The fundamental obstacle to increased capacity and resilience on the Brighton Mainline is the bottleneck in the Windmill Bridge Junction area to the north of East Croydon.
Greater Brighton leaders backed the call for a redesign of this junction to be made a priority. It also supports the Brighton Mainline Alliance’s calls for two new platforms at East Croydon which will reduce congestion.
The direct benefits of upgrading the line include:
- More trains per hour at peak time (from 36 today increased to 42-44);
- Opportunity to run new services;
- Increased service reliability, addressing the “poor and unreliable condition” of the network as identified by the Gibb report;
- Value for money (estimated benefits of £2.40 to every £1 spent);
- Commercial opportunities to redevelop stations, particularly at East Croydon;
- Encouraging balanced economic growth by bringing businesses out from London
More than 40 regional business groups and more than a dozen influential MPs have backed Coast to Capital Local Enterprise Partnership’s Brighton Mainline Alliance so far.
The aim is to bring together voices from politics, business and education to develop a united voice when lobbying for investment.
The next step is developing a plan to present to Chancellor and transport secretary ahead of Network Rail making a decision on future spending plans.
Jonathan Sharrock, Chief Executive at Coast to Capital said: “Support from the Greater Brighton Economic Board is vital to the success of the Brighton Mainline Alliance and we are thrilled to have their backing.
“The Brighton Mainline proposal for investment in Windmill Bridge junction is a strong proposal which has been recommended by Network Rail and it is vital that we make the case to Government that this scheme is a priority and that it is approved for strategic investment.
“We look forward to continuing to engage with groups such as the Greater Brighton Economic Board and businesses across the region in the near future.”
As a member of the Campaign Alliance Railfuture is pleased to see Greater Brighton leaders adding their voice to strengthen the case for investment in a bigger better Brighton Mainline to maintain and enhance the economic performance of the businesses and communities it serves.
Critical within this is the rebalancing of passenger footfall between Gatwick Express and scheduled Southern services to East/West Coastway. The existing imbalance is fuelled by the fare disparity which encourages passengers to Southern services which become routinely overcrowded, whilst the GX services carry lots of air. Both services are p/o the GTR franchise and the lack of action to address the issue should be a cautionary tale for DfT when it re-splits the TSGN franchise.
The off-peak services from Ore/Eastbourne and Littlehampton, which combine/detach at Haywards Heath suffer from extreme overcrowding, especially at shoulder-peak times and urgently require separating into standalone services with more carriages.
The situation is exacerbated by current fare policy on the Gatwick Express. Premium pricing pushes passengers onto ordinary Southern services – adding to overcrowding – because they are significantly cheaper and offer similar journey times.