Just to update anyone interested: Number 27 is still running sweetly. I purchased it in May after previous owner had taken it off the road for a couple of years. Just had part of suspension rebuilt for secure towing of classic caravan, and all brake pipes changed to copper. Working on bodywork myself since I have enough kit, and will probably respray in due course. Currently need to check lack of panel lights, but likely answer now located on this forum so thanks to contributors!