My Lords, quite properly everyone has been raising the issue of those people who live and work across borders, work on ships and trains, or are lorry drivers. My concern to some extent is those people-I could be one of them-who live in Scotland but whose sole income is a pension from the other place, and whose tax office is Cardiff and not East Kilbride or anywhere in Scotland. I am still not quite clear how that tax office will know that I am a resident in Scotland. As far as I know, it does not have to know my home address. I would accept that this debate was back in the 1990s. Of course, technology has moved on and it may be that we now have a database that allows the Inland Revenue to know exactly where you live. I rather doubt whether it has ever bothered to update the records and keep them up to date. What happens to someone who lives in Scotland and should be paying tax in Scotland but whose sole source of income and tax office are outside Scotland? How does that person know what tax they should pay in Scotland?