Source:
BBCThe British National Party (BNP) are calling for an end to immigration from Muslim nations, saying this presents a "deadly threat" to the UK. The BNP also plan to give grants to encourage some UK residents to return to "their lands of ethnic origin". The BNP recently changed their whites-only membership policy after it was ruled unlawful by the courts.
The BNP are campaigning on a platform of curbing immigration, only allowing new migrants in "exceptional circumstances" and pledging to deport all illegal immigrants.
Mr Griffin said there was only one new commitment on immigration in the manifesto - which would see all citizenship grants approved since 1997 reviewed to see whether they are still "appropriate". Mr Griffin said the UK was "full-up" and it was time to "close the doors". Mr Griffin said his party would support "decent settled minorities who accept that Britain should remain British".
Among other pledges, the BNP wants to leave the European Union, withdraw British troops from Afghanistan and abolish regional development agencies and other quangos (quasi-autonomous NGO's). It calls for restrictions on imports from China to help protect jobs in British manufacturing and avert "economic disaster".
Read more:
http://news.bbc.co.uk/2/hi/uk_news/politics/election_2010/8639097.stm
On the other hand, the Liberal Democrats are proposing a plan to legalize many of the UK's illegal immigrants and is generally pro-immigration. (Their manifesto: "We will allow people who have been in Britain without the correct papers for 10 years, but speak English, have a clean record and want to live here long-term to earn their citizenship.") They also are very pro-EU to the point of wanting the UK to join the Euro-zone - seemingly a risky position given the problems the Euro-zone is having right now and the historic resistance shown by the British to adopting the euro. I guess the best you can say about it is that they must really believe that more integration with the EU is a good thing, since they certainly are not proposing it because it's politically popular. It's not.
The Labour Party and the Conservative Party are more towards the middle of the immigration issue, proposing to "control" it and "cap" it, respectively, and in their attitudes towards the EU.