The Lib Dems, Plaid Cymru and the Green Party have agreed to not run candidates against each other in 60 seats across England and Wales, in an attempt to get more pro-Remain MPs elected on December 12.

Under the plan revealed on Thursday, the Lib Dems will be given a free run in 43 seats, the Greens will be unopposed in 10 and Plaid Cymru have been handed seven.

Labour is not taking part in the pact.

The deal, brokered by the Unite To Remain group, follows an agreement earlier this year in the Brecon and Radnorshire by-election, where the Lib Dems took the seat from the Conservatives after the other two parties stood aside.

Jo Swinson, the Lib Dem leader, said she was “delighted” that an agreement has been reached.

Adam Price, leader of Plaid Cymru, said: “In these deeply serious times we need grown-up politics that puts our countries before parties.”

Sian Berry, co-leader of the Green Party, said: “The crash-out Brexit the Tories are pushing for would be a disaster for people up and down England and Wales. And for action on climate chaos.”

The Lib Dems have also decided to stand down in Beaconsfield to help former Tory MP Dominic Grieve and in Broxtowe and in Luton South to help Change UK’s Anna Soubry and Gavin Shuker.

Remain-alliance seat list in full

Green Party (10)

Brighton Pavilion 

Isle of Wight

Bristol West

Bury St Edmunds

Stroud

Dulwich and West Norwood

Forest of Dean

Cannock Chase, Exeter 

Vale of Glamorgan 

Liberal Democrats (43)

Bath

Bermondsey and Old Southwark

Brecon and Radnorshire

Buckingham

Cardiff Central

Cheadle

Chelmsford, Chelsea and Fulham

Cheltenham

Chippenham

Esher and Walton

Finchley and Golders Green

Guildford

Harrogate and Knaresborough

Hazel Grove

Hitchin and Harpenden

Montgomeryshire 

North Cornwall

North Norfolk

Oxford West and Abingdon

Penistone and Stocksbridge

Portsmouth South

Richmond Park

Romsey and Southampton

North Rushcliffe

South Cambridgeshire

South East Cambridgeshire

South West Surrey, Southport

Taunton Deane

Thornbury and Yate

Totnes

Tunbridge Wells

Twickenham

Wantage

Warrington South

Watford

Wells

Westmorland and Lonsdale

Wimbledon

Winchester

Witney 

York

Plaid Cymru (7)

Arfon

Caerphilly

Carmarthen East and Dinefwr Dwyfor

Meirionnydd,

Llanelli

Pontypridd

Ynys Môn