MPV Weedkiller probably ?
Tis Autumn. Railhead treatment train?
Whichever of these it is (the chances are that it will have been one or the other), both of these have regular schedules. I travelled up from Pinhoe to Basingstoke today and passed a weedkiller train at Gillingham. Checking
RTT» , I noticed that it had run on Monday and Tuesday as well.