Looks even weirder shunting class 460s around! See
here and
here
Good to know the ex-SUB trailer previosuly at St Leonards has been preserved. As someone who lives in St Leonards I saw it quite often through the windows of St Leonards Depot. Here's a couple of photos (not mine) of it at St Leonards shortly before leaving for Finmere:
http://gallery35428.fotopic.net/p63195046.html
http://gallery35428.fotopic.net/p63195045.html
It was used as part of DEMU 930301, which has two motor coaches - 977939 (formally 60145 from 205027/1127) and 977940 (formally 60149 from 205031/1131). There was also an ex-class 205 centre trailer (ex-60660 from unit 1111 (laterly 205101/205205) which was sometimes formed as part of 930301 and I believe out of the two trailers, this one was used for sandite application. However, it has since been scrapped at St Leonards.