I recommend seeing a tax advisor to determine your status.
However, broadly speaking, there are two levels of "connection" to the UK which determine the number of days you may spend in the country. A day equates to a midnight spent on UK soil. So if you arrive at 1400 one day and leave at 1400 the next day, that is 2 days.
If you are found to still be connected to the UK and if you have a house, wife and kids in school, and I would GUESS that you would be, then you are allowed 45 days.
If you had a house that is not rented out and you just go back there occasionally, then you could spend 90 days in the UK.
The test is to determine how much of the public services you are using and therefore whether you should be paying tax or not.
This is a difficult area as none of the new rules (to to my knowledge) have been tested legally. Naturally they make it difficult for the little people who can't afford elaborate tax avoidance scams - the lives of the Russian oligarchs will remain unchanged.
See an advisor.
Last edited by Al Murdoch; 23rd July 2013 at 09:59.