I always wondered why they are called PARs. An SRA is flown using a SAR and a PRA is flown with a PAR.
That works like the rest of them, app being omitted most of times: ILS (app), VOR (app), PAR (app), SRE (app). But I don't know about the UK and the USA; you guys have funny words for many things we level 4 members never heard.