there is no reason why you can't go SVFR in the Class A, convert to IFR once inside the Class D CTR and then ask for an ILS.
Only if the UK IMCR is valid in the C.I. Class D.
I don't know - is it?
If it was legal, it is a viable option if the IMC is confined to the airport area
Or if you want to log an ILS approach