Mars
Thanks for your thoughts. Would seem from the paucity of responses there may be a potential issue here, though one I'm sure the CAA would address, so I will forward my concerns, as you suggest.
Would seem the issue is whether becoming visual at the bottom of an instrument approach the becomes a "flight relying on visual references", in which case the proposed 800m vis rule would apply, or whether the actual "flight" as IFR does not rely on visual references even though the "flying" at the bottom of the approach obviously does.