Shanwick, perhaps you would like to give us the benefit of your take on the position rather than refer us to an overseas work allowance that is not appropriate to a Uk based contract where all the duties start and finish from a UK base? agreed, the IR have a habit of making things complicated with phrases such as " non domicile" etc etc, but this LGW contract is a clear cut case, unless you can advise us otherwise?
Obviously, the situation in the individual's country of residence will affect their overall liability.
as previously stated