I have tried to find links to the various main political parties election manifestos and have found the following. They are in alphabetical order. Some of these documents are long and take time to load.
Alliance for Green Socialism
Alliance Party (NI)
BNP (warning this manifesto may contain material which many find offensive)
Communist Party
Conservatives
Democratic Unionist Party
English Democrats
Green
Green Party (Northern Ireland)
Labour
Liberal Party (not to be confused with Nick Clegg's Liberal Democrat Party)
Liberal Democrat
Libertarian Party
Mebyon Kerrow (Cornwall)
Monster Raving Loony Party
National Front (warning this manifesto may contain material which may offend)
Pirate Party (UK)
Plaid Cymru
Respect Party
Scottish Green Party
Scottish Socialist
Scottish Green Party
Sinn Fein
SNP
Social Democratic and Labour Party
Socialist Equality Party
Socialist Party
Trade Unionist and Socialist Coalition
Traditional Unionist Voice
UKIP
Ulster Conservative and Unionist
Alliance for Green Socialism
Alliance Party (NI)
BNP (warning this manifesto may contain material which many find offensive)
Communist Party
Conservatives
Democratic Unionist Party
English Democrats
Green
Green Party (Northern Ireland)
Labour
Liberal Party (not to be confused with Nick Clegg's Liberal Democrat Party)
Liberal Democrat
Libertarian Party
Mebyon Kerrow (Cornwall)
Monster Raving Loony Party
National Front (warning this manifesto may contain material which may offend)
Pirate Party (UK)
Plaid Cymru
Respect Party
Scottish Green Party
Scottish Socialist
Scottish Green Party
Sinn Fein
SNP
Social Democratic and Labour Party
Socialist Equality Party
Socialist Party
Trade Unionist and Socialist Coalition
Traditional Unionist Voice
UKIP
Ulster Conservative and Unionist