Yes they do, I have an O gauge one for my "when I get round to it" Chard Junction based project. I grew up about a mile from there and visited the adjacent pub nearby with my family as a child. We knew a lot of people who worked at the factory, one of them being Frank Long who was one of the qualified drivers and I had several cab rides up and down the yard in it. Frank had his five minutes of fame a few years ago when he was on "Deal or No Deal" and became a bit of a legend.
After leaving Chard Junction, the shunter went to the Cholsey & Wallingford Railway for a while, and it now lives on the Mid Suffolk Light Railway. The 165 replaced a Ruston 48, and I don't know where that went. The milk tanks of the 80's were coded TMV. I believe they arrived, sat in the yard for several years, then got towed off for scrap.
The factory now no longer exists, it has been demolished and the land essentially useless due to it being on the flood plain of the River Axe adjacent to it.