You don't half talk some absoulte crap.
If he's lived here in the past and paid taxes then he's entitled to whatever he can get when he returns to the UK, the same as I get medical treatment in the UK even though I spend more and more time in the US.
As for 'sexually fuelled sojourn' I guess you may be surprised, but this goes on with 10,000's of people every Friday night in the UK![]()