I just looked on Flickr and in 1989, 20088 was in triple grey but no sector markings and didn’t have snowploughs at the cab end but by 1991, it had gained a 3 piece set, still in triple grey and with no sector markings, 20088 under the cab windows, 088 on the front under the drivers window just above the solebar. I doubt it had snowploughs on the other end.