We are (since 20th December) in Tier 4: 'Stay at home' which means that, under government guidelines, club rides have been suspended until further notice.
Under the guidelines you may only exercise outdoors in public places alone, with your household, support bubble, or one other person. This exercise is unlimited - but you must not leave the Tier 4 area, and exercise should be done locally wherever possible.
Many members are making use of the other Socially Distanced activities with the club.