Re: UK Contacts
Go to the UK Film Council Web site and download the producers guide, which is there in .pdf format. It's about 170 pages or so and includes everything from prodcos to below-the-line services.
It doesn't list which are accepting queries, but it does list what the companies have done in the past, so it makes it easier to zero in on the right company to get your script to.
I've found the UK prodcos are also much more polite in accepting query letters.