Do you drive north through Dulwich?
If you are rich enough to use the College Road toll-gates or mean enough to take the Huntslip Road detour then it's not going to happen from July 29th to November 2nd. Basically the area around the roundabout where the two routes rejoin t'other side of the toll gates closes.
For detairs go here: https://www.thedulwichestate.org.uk/wh ... ure-notice
(from a post made in another place)