If your duties start in the UK you will be liable to UK tax and to avoid this you have to be outside the UK for more than 181 days a year and your duties would have to start elsewhere. With this LGW based contract it is impossible to avoid UK tax, ok if you live in Europe you may get a marginal advantage but most of Europe had a dual tax agreement with the UK do its just an offset and in some ways the UK can be cheaper overall especially with medical costs etc. Either way there's no way out of the tax burden . Living outside Europe and attempting a commute would cost more than the tax bill in flights and Hotels