Answering my question forwarded from a Spotting List.

5/6 May – PFA Sywell Revival Regional Rally – Sywell.
26/27 May – PFA Northern Lights Regional Rally – Wick, Scotland.
23/24 June – PFA Robin Hood Regional Rally – Hucknall.
30th June – PFA Southwest Regional Rally – Dunkeswell.
25/26 August – PFA Real Aeroplane Regional Rally – Breighton.