We have created a Google Map of Lewisham '77, showing the route of the demonstrations and other key points. You can check it out here.
The map will be updated as our knowledge improves. Drawing it has raised some questions about routes on the day. For instance we know that the National Front demo reached Cressingham Road in Lewisham but ended up with a rally in Conington Road, which it had passed earlier. Did the march turn around and retrace its steps or did it cross the railway line at the end of Cressingham Road and head pack to Conington Road through the back streets?
Either way the route suggests that the NF march was heading for a rally in the town centre but turned away because of the crowd there - otherwise it would presumably have turned straight into Conington Road when it passed it the first time.