Fuji,
Already planned for OB now, but Shoreham is a favourite, however, I normally route one way round the LHR & Gatwick zones, and come back the other way.
What does an SVFR transit involve, and how easy is it to get? I have no problems with transiting Luton normally, just would have thought Heathrow a bot more difficult - sounds like a challenge though.
DW.