Are Southern's "cashable National Rail vouchers" the usual green ones?

[mm333]

I'm putting a delay repay claim into Southern by post. Their form says "Please send me cashable National Rail voucher(s) which may be exchanged for cash at any of OUR* ticket offices." * my emphasis

Are these the usual green ones that can be used nationwide? I use Southern about once a decade and so don't want anything that I have to take to one of their ticket offices when I live 200 miles away.

 

[Bletchleyite]

Yes, they are - you can spend them on any National Rail service but only the issuing TOC can cash them for accounting reasons. But why not do it online and have a BACS transfer into your bank account? Nothing is more convenient to spend than actual money.