Yes, I know of two at least which survived after 1948: one was used as an office within a large goods shed and is now part of the collection at Didcot, having been fully preserved. Doubtless, being retired as an office under cover ensured its safety. The other I know of was converted into a tunnel inspection carriage in 1949. There must have been others dotted around the region, too, for a time. But only the Didcot one with us now I think.
Tony
Tony