I think you maybe right. This is a picture I have in "Desert Rats at War Vol2" that also clearly shows a Cromwell Observation tank with a full gun. It's pictured outside the 22nd Armoured Brigade HQ at Syke (southern appoaches to Bremen) in April 45. I'm pretty sure the IWM Centaur pictured above is from a British unit, though as I didn't read the info with it, so I may be wrong!
