Changes

A thread Threads discussing the identity and fate three Type 27A trolleys can be found [https://groups.io/g/WickhamofWare/topic/severn_valley_railway_type/25209296?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,25209296 here] and [https://groups.io/g/WickhamofWare/topic/severn_valley_railway_type/25618346?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,0,25618346 here].