Manolo

Yes, I think you are right, the focus of my attention is now shifting to Swiss taxes.

I re-read IR20 which is quite clear that resident or not, if your employment is in the UK, for a UK company and paid in the UK then you are subject to income tax.

As I am a Commonwealth citizen (which includes British) I retain my personal allowances.

As I will be non-resident, not ordinarily resident and non-domiciled, I can receive bank interest without deduction of basic rate tax which is a minor consolation.

Shimla