想去英國工作或定居......

depend on what passport are you holding and you have to ask yourself why UK??

first is to apply a Entry Clearance

this is the offical website about working in UK.

http://www.workingintheuk.gov.uk/working_in_the_uk/en/homepage.html

check it out.

travel visa is NOT allow to look for work in UK, so don't think about it.

you have to apply via UK visa, info can be found at the above website.

if you're looking for the cheapest, UK is not the best place, remember this UK is part of EU, you can start looking at other EU too....

hope this help. if you have more question, just ask..... =)

You can apply for HSMP (Highly Skilled Migrant Program). This program allows you to work in UK. http://www.workpermit.com/uk/highly_skilled_migrant_program.htm

You can also check on this site if you are eligable: http://www.hsmp.uk.com/

Fees is 400 pounds. http://www.workpermit.com/news/2007_03_08/uk/new_immigration_fee_rates.htm

Finally, 旅遊證是不可以在英國工作.

Hope this helps