Hi Kat,
I went through that whole process in June 2010.
IN GBP:
the UK police check was 35.
The info was all online. You fill in some forms that you download from the site, get passport photos signed, proof of address etc. and mail all the docs in. Usually procesed within 10 days and sent back ASAP.
Chest x-ray at Ashford Hospital was 70.
Panel Doctor (not able to use my GP) was originally 234 when I asked for a quote in March, but price went up to nearly 300 by the time I actually went in 2 months later. Also, I had to fast 10 hours before going in so they could test my blood sugar levels - an added procedure, hence the higher cost?