Wonderful - many, many thanks Mike!
I see that both the Lewisham High Street Box and the Dulwich Village Box are on there - Yay!
I do notice, though, that the two repeats in your new list (P34 and P46 were in the Met List as copied so we had those) seem to show some differences from what we already have:
Old from copied Met List --
P34 Box A.R.W. Siren 13-Aug-34 60 Junction of Honor Oak Park, south side and Hengrave Road, north side Forest Hill East Dulwich
New from plumbly7 --
P34 Honor Oak Road, north side at Hengrave Road, south side (Siren) East Dulwich Sub-div
Sides of of the street are reversed in the new one and Honor Oak Park is changed to Honor Oak Road (I see on Google Maps that the road does change names, but it seems to indicate the change isn't until it hits Forest Hill Road so should theoretically still be Honor Oak Park at Hengrave Road). As a result of the North-South reversals, the corner would be radically different (and in fact there is no real "corner" on the North as it is a "T" junction) - which is correct?
Old from Met List --
P46 Box A.R.W. Siren 13-Aug-34 Dartmouth Road, east side 100 yards south of Suncroft Place on forecourt of Sydenham police station (closed) Sydenham East Dulwich
New from plumbly7 --
P46 Dartmouth Road, east side 118 yds north of Kirkdale (Siren) " "
These seem to be self consistent, just measured from different directions - just very curious why the difference in description (rather than just a refinement) between the List from the Met and your updated one. In fact, very, very curious about your updated and amended list as a whole.
We will very eagerly await your return - have a good trip!