The Government have released updated guidance that comes into effect from 2nd December when local restriction tiers will replace the current National restrictions in England.
Based on this guidance, and subject to Parliamentary confirmation, Model Flying Clubs in all Tiers can re-open; however, you are expected to operate in a Covid secure way. See https://clubsupport.bmfa.uk/6-steps-to-covid-secure
The rule of 6 also applies in all Tiers and you should not organise gatherings of more than 6 people. However, should more than 6 people independently attend a flying site this does not appear to be a breach of the regulations provided that they do not mingle.
Members should avoid travelling in to and out of Tier 3 (Very High Alert) areas.
Tighter restrictions are in place from 27th November 2020 until 23:59 on 10th December that prohibit indoor and outdoor sport, unfortunately this means that model aircraft flying should not take place during this period.