Warning - don't cycle your (tebbit) bike too far
One interesting case at today's advice bureau was where someone had gone to work in Bulgaria for just over 3 months. On return they are deemed to be "Not Habitually Resident" in the UK and as such cannot get benefits.
Perhaps this is a mechanism used by Tony Blair to increase emigration.
This should, however, be an easy case to sort.
Another interesting case was a group of Brummies who were deported from Israel. Superficially it appears the main reason was that one of them had visited Pakistan.