Hi, I've so far tracked them down to pilotuk.com but the domain expired in March 2006 and doesn't seem to have been resumed.
I've found the company that took over, Creation Financial Services Ltd., Equipoint, Coventry Road, Yardley, Birmingham, B25 8FE with the website of
www.duet.co.uk.
I've just discovered that the 0870 number listed for Duet is listed in the database on here so I'll be calling them tomorrow and will keep you informed of the outcome.
I emailed them the FOI request information so I'll post that as well (in the correct area) when/if I receive a reply.