It was not intended, as an escape tunnel to write off a potential capital gain on future disposal
How do you know? Please point us to the Hansard reference to this point. In any event, the courts are not mad keen on applying purposive construction to tax cases.
nor do I believe applicable, as an escape tunnel to write off a potential capital gain on future disposal
What you belive is irrelevant. I - and others - can read the legislation. The legislation is very mechanistic indeed. It has to be. It is also very clear. It is based on the 23rd word of s222 (7) (a) "is".
And you are very clear that my reading of the legislation is absolutely correct when the situation is the other way round - i.e. H transfers property to W when it is no longer their PPR.
To argue your point successfully you need to point out how the legislation differentiates between the two scenarios. It doesn't.
It would be wholly inequitable for HMRC to use the legislation to deny PPR to a W who is a recipient of the property after they move out, yet when the transfer is prior to moving in, to require the PPR rules to apply to the pre-ownership period.
Sorry, I have no practical experience of the application of this point. However I would be happy to say that HMRC would never litigate the point as they would lose - which would set the precedent.