On its first outing for some time after boiler repairs, "Britannia" class 4-6-2 No. 70013 "Oliver Cromwell" is hard at work on the climb to Sharnbrook summit as it approaches Souldrop with 37706 tagged on the back of the 10 coach train. This is 1Z48, "The Lincoln Imp", 08:15 from London Victoria to Lincoln. It is running on time at 10:49 on what used to be the double track slow lines, now a single bi-directional line at this point. Saturday 12th March 2011. Digital Image No. GMPI8179.