http://www.caa.co.uk/docs/33/SRG_FCL_APPROVEDFTOS.PDF
Page 6 lists all the Distance learning courses for both ATPL and CPL.
I am afraid Old sarum isn't listed unless its Ground services training limited.
I was suprised how few there were.
And if Bristol offer the course they better speak to someone quickly because that document is published on the 20 Dec 2006 and they don't seem to be approved ( I am quite sure that they are though)