At around the 3 minute point where the railway viaduct is in shot it looks like there are side road fluorescents on concretes. There is a shot behind the biker at 3.05 and i wonder if that is a Revo Junior Sol-Etern as the "connection" to the bracket looks a bit unusual. More wonderful lanterns which I think are fluorescent at the traffic light shot at 4.19. Big main road fluorescents by the newsagents as well.
I don't think those are Beta 3's in harp brackets as the Beta 3 has only a single ended canopy. The one at 7.12 shows refractor panels (dark) and a lighter bowl end. More shots at 7.19 and 7.47 confirm it is not a Beta 3, probably a "Baby Dalek" which are known to have been fitted to harp brackets.
A spot of relighting seems to be going on at 7.57 with what looks like a GEC9454 replacing an older column.
The real gem may be at 8.03 which I think are GEC 9504 SLI lanterns - pictures of which are incrediably rare.
Note the clip position and type and canopy bump and compare with the catalogue
here.