37512 Thornaby Demon holds up the traffic at Askern on 10 July 1994, as it heads north with steel empties. A grab shot whilst waiting for 56135 & 56068 on the Pathfinder Tours 'Donny Deviator' railtour. Built in 1961 as D6722, the loco is still active on the mainline today (as 37608), the red Vauxhall Nova waiting at the barrier has not been so durable!