IMHO the HMRC should use its manpower (+ girlpower, must be PC!) to sort out the 10p in the £ fiasco as a priority before wasting resources on chasing tax on aircrew allowances!
Our PM's U-turn will no doubt cost us tax payers even more when you tot up the wasted man-hours (sorry people-hours) the Revenue will have to spend sorting out tax credits, rebates and new tax codes for the 5+ Million affected.....This bit never seems to get mentioned in the press, I wonder why??
HMRC will end up costing us £100 for every £25 this is likely to "save".....

MB