Sunday 26 July 2015 3.31pm
In case it is of interest, the Movietone Archive is now on Youtube. I didn't do a full SE1 search but searching Elephant and Castle I found a brief item about a partial building collapse, in a film that I would guess is from the 1935 (as it seems to be preceded by a brief snatch of Herman Goering's wedding!):
House Damaged by Gale Results in London Tragedy
A web search on the Leete's Paints shop indicated that the building appears to be one of the restored LSBU terrace on London Road
, just along from the Duke of Clarence. The building next door to what was Leete's still has the number 128 embossed on it.