152 road engines (not including steam cars, fire engine, bitzas, fairground engine etc) present on the Friday, it seems 3 more arrived for the weekend. 158 in the programme, 11 no shows with 5 'not in programme'.
http://www.internationalsteam.co.uk/...kindexow17.htm
Definitely this was the best of the three days for photography, but I reckon there was about minute of sunshine for each engine present, but not all were off their loaders before the cloud (and rain) arrived.