GWR▸ are only retaining 5 153s. Post DDA» deadline they'll either need the toilet locked out/removed, or working in tandem with a 150.
The 5 they are retaining are going green, the remainder white. They require repaints as part of the exam refit they are all due.
I think this is all history now, all the 153s are staying for a time although with so many stories flying about some fact, some guess and some rumour, the position changes day by day. This GWR green one, 153318 is an Angel one so not one of the 5 quoted which are Porterbrook owned. 153305, again not one of the 5, is painted white and known as Casper (The White Ghost) because at that time it's future was not known.