Cost effective use of resources.

It is understandable that there are calls - particularly from the survivors and relatives of those who died - for a public enquiry into whether there were any intelligence failings regarding the London bombings, particularly now that there appears to be evidence that the bombers were (or perhaps should have been) under surveillance for some time before they struck. Like I say, understandable, but the cost of public enquiries tends to run into millions of pounds, and for what result? Hindsight is a wonderful thing, and with hindsight clearly things could have been done which might have prevented that tragedy - and that is likely to be the sum total of any enquiry, however it's dressed up. I think the money could be better spent on trying to ensure there is no repetition.