Thanks , yes I have that book just wondered if you found another source !
Also don't seem to be many good quality photos of the station building around to check the smaller details, at least I haven't found many anyway, I used to travel on the cuckoo line and remember seeing a Q1 shunting at Hailsham, the class 33 goods train that went up to Heathfield and the DMU shuttle to Eastbourne.
Earlier in my life I can just vaguely remember going to London from Hellingly station, not the quickest of journeys but life was more relaxed in those days !
John