Quite some time ago, pilots on the “new” Brookfield contract (3-pilot ltd companies set up in Ireland) who were British citizens based in the UK were told HMRC required them to pay all tax and NI in the UK. Needless to say the HMRC expense rules are rather more stringent than the Irish.
One ended up paying both employees and employers NI contributions with 5% reduction in your taxable income to account for general expenses the only alleviation, unlike those under the Irish taxman who were paying themselves €800/month and taking the remainder in expenses.