I dunno!
To assist with your price comparison, I do know that a
new Expedition 8.4,
single 285hp, trailer is about £80k incl. VAT, electronics extra. The Expedition is 8.6m LOA, and probably seats as many or more than
Redbay 10 (I don't think she had side benches in the Cabin???) and does about 35 knots. I'd guess that
Redbay 10 is not towable. The Expeditions are, if you take the anchor out
So I'd be wondering about the £75k... other than the attraction of the second motor, which is a major plus, until servicing time
If I was you - I'd hop on a cheapie flight and test drive both of them