The LCC have had to close sign ups for the RideLondon FreeCycle due to a shortage of marshals (except in boroughs where there are less than 50 sign ups). This is so they can keep the ride size to safe numbers. If you have friends or contacts who want to take part, they can sign up to be marshals. If they have a big sign up of marshals, they can consider opening some of the rides again. If you have friends, colleagues or contacts who are keen to join and they are confident cyclists, encourage them to sign up to volunteer marshal.
Sign up here:
Barnet Cyclists 