Green’s Dictionary of Slang

snouter n.2

[snout n.2 (1)]

a tobacconist; thus snoutery, a tobacco wholesaler.

1956
19601965
1970
[UK]‘Charles Raven’ Und. Nights 185: This particular night they had screwed a big wholesale snoutery at Enfield.
[UK]G.F. Newman Sir, You Bastard 76: A couple having it off at a snouter’s [...] a tobacconist’s in Fulham Road.