BR "Britannia" 4-6-2 No. 70013 "Oliver Cromwell" is at the head of 1Z21, "The Yorkshireman", 06:10 from Watford Junction to York and return. It is drifting through the former brickworks at Stewartby, by Forders Sidings, between Bletchley and Bedford at 07:18 under rather leaden skies. Saturday 7th May 2011. Digital Image No. GMPI8859.