I've got an old forge piston type vta dump valve in the shed, if you can get someone to collect it you're welcome to it as its no use to me, sadly not going to the weekender as I am on call that weekend
Seems she goes home (to Reigate) on the 6th and will be coming back over my way on the 7th at some point.
Assuming Ken Ken Ken (etc) is up for it then she says Epsom is easiest for her