Thank's Exmudmover, I've got Jerry Pook's book, just not to hand. One other thing noted by Sqn Ldr Pook is that 801's QWI told him that 801's average miss distance was 400 yards with a medium level drop, while Ward's account states that 800 NAS were literally missing the aim point by miles. He also states the daylight mixed formation attempt was in fact very close and would have most likely caused major damage to the runway had it been tried a few more times. I bet if you work out the CEP of every bomb dropped by the two Vulcan attacks at the start of May, their average miss distance is a lot less.