Sorry for delay in replying but I couldn't get on to PPrune.
Castleford Tiger - they are staying in Tavira on the Algarve.
The day after posting the question Jet2 emailed and cancelled the flights on the 25th July. Fortunately, managed to book flights on same date, seats and baggage with Easyjet; for a considerable saving tbh. They are fine with the 14 day quarantine on return if that is still in play when they return end of August.