A greengrocers shop that was in Upper Green West, north side, possibly where Huttons fish shop was later situated.
At time of writing, August 2020, the web page on Merton Memories gives no indication as to where in Upper Green West the shop was.

Left hand side of Currell’s shop showing part of next building. Clip from Merton Memories, photo reference Mit_TomFrancis_Ln212
The chimneys on the building on the left look like those on no. 4 Upper Green West which still stands in 2020. The chimney on the Currell building looks the same as that on Huttons Fish shop, and while the number of windows is the same, its frontage is different.
The Merton Memories website says that it was a photo in the Tom Francis Collection. That website uses a Picture Reference for each of their images, and this one has “Mit_ TomFrancis_ Ln212”, which refers to note number 212 in Tom Francis’s notebook, which he used when displaying his slide collection in Mitcham Library. He died in August 1953. Note 212 says:
Currell’s sweet and greengrocery shop facing Fair Green. The type of many of the village shops – plaster fronted. This type was at one time were on two sides of Fair Green.
This note however doesn’t say where the shop was.
The 1896 Kelly street directory gives the location as the road is described as if walking along it, and the entry for the ‘North Side’ of Upper Green is described from Western Road to the High Street (London Road today):
NORTH SIDE
… here is Western Road
James MacMAHON, refreshment rooms
Henry HIGGS, boot and shoe stores
Edward MAXWELL, grocer
James TROTT, butcher
WALPOLE Bros., grocers… here is Durham Place
Nag’s Head P.H. James Reynolds CHESHIRE
Arthur Vincent COOPER
John WALKERDINE, boot maker
Arthur R. KEMP, baker
Henry QUINBY, boot maker
Thomas GREEN
William BOXALL, tailor
Alfred CURRELL, greengrocer
The next shop would be Collbran’s butchers, but he is listed in this directory at no. 1 High Street.