My old RAF boss (Peter Maillard) has just posted this on Facebook, he actually saw the wreckage shortly after the crash.
"I have the honour to have seen the still smouldering wreckage [and seeing a foot in a flying boot] after school on the day. The crash site was relatively small in the edge of the wooded slope just off a series of footpaths which bordered the grassed area The pilot could have landed on the big grass recreational area but it was full of playing people, he did indeed sacrifice himself and crew to save others. The memorial area is a credit to all in Sheffield."