PIC1DAY:
That sounds like a good idea ("easyProp"?
). I'm not sure, though, what the single-engine IFR regulations are in the UK, i.e. can you fly pax on a Public Transport C of A in a single-engine plane? Restricting operations to VFR would be rather a limitation (!), so it might be necessary to either choose a twin (worse economics) or wait for changes to the SEIFR regulatory environment (not sure where these are at).
There's no shortage of decent routes if the economics work, but I'd just check out the regulatory situation first.
If that turns out OK, then let's talk!
Cheers
Cyrano