Whilst one of these is known to have been moved by Alleys Haulage from WSR Williton to Chinnor on 17th May (thought to be DRP78212), the other appears to have gone from Williton as well. Has this also been moved to the Chinnor and Princess Risborough?
Track Engineering DRP78211 and DRP78212 - On-Track Machines - Forum
Track Engineering DRP78211 and DRP78212
Noted a pair of Twin jib track relaying machines at south end of Princes Risborough down sidings this morning, 28th June
Too fast to get any numbers - but must be these