Whopity, are there really people on the CAA front desk giving such duff advice?
As far as I can establish from what Dope says, he has a current and valid PPL(A) with SEP Class Rating and wished to add the TMG Class Rating to his licence.
The CAA couldn't tell him who was authorised to conduct the TMG Class Rating Skill Test - not for 'data protection' but because they STILL haven't sorted out their IT and don't have such information readily available! It was a white lie to protect the incompetent.
The CAA FCL statement actually meant that the TMG Class Rating Skill Test could be acceptable in lieu of the '1 hr training flight with an instructor' only as part of the SEP revalidation requirements if Dope also had the requisite SEP flight experience in the 12 months preceding the date of expiry of the SEP Class Rating.
A TMG CLASS RATING SKILL TEST IS NOT ACCEPTABLE IN LIEU OF THE SEP REVALIDATION LPC OR SEP RENEWAL LST!!.
A TMG Class Rating Skill Test and SEP Class Rating cannot be conducted during the same flight, as Whopity so rightly says.