It's just another benefit loophole that many many couples have cottoned on to and it should be looked in to. Responsible tax payers are paying for this fraud.
Clamp down on housing benefit to single mothers with children where the partner/husband (who usually works full time) visits every day but only stays a couple nights a week so the mother can claim housing benefit as a single parent. It's just another dodge to claim benefits unlawfully and it is happening everywhere