I love Luton airport, you just have to know what to expect; bring your own plastic bags, have luggage with it's own wheels so you don't need their trolleys, park down the road at the super cheap British Rail parkway car park and get the £1 door to door bus etc.
"UK BORDER FORCE" are quite capable of making us wait an hour in a stupid queue at any airport, not just Luton. I do like all the posters they've got at Luton now though claiming the delays are for our own security