We can confirm that the guidance from Boris Johnson in the latest conference on 09/09/20 excludes outdoor organised sporting activities in England. Therefore all events in England can resume as normal. Special measures will be put in place.
The government guidance can be seen HERE.
A press release from British Triathlon can be seen HERE.
Regarding events in Wales: Pilot events recently took place in Wales as part of a staged return. At present we are awaiting the next set of guidelines laid out by first minister Mark Drakeford. Information will be released at the soonest possible date.