London 2012 is in the history books, marking one of the most exciting, successful and inspirational Olympic Games ever staged. But among the stand-out successes and powerhouse performances that characterised Team GB, a shadow of disquiet started to form.

It wasn't related to our superb Olympians and Paralympians, but to the one remaining Olympic promise that still rings a little hollow in some ears – that of a meaningful ‘legacy' for sport and recreation. I don't want to be pessimistic about this, after all, even the harder-edged doom-mongers were proved wrong about London 2012 with its great achievements, our new national treasures – the wonderful ‘games makers', few transport problems, and Opening and Closing Ceremonies to be proud of. So maybe the legacy will, in similar form, defy expectations.