Not so many things as some letters (although “when you’re out with me, baby, you get ‘D’, ‘D’ in …)
Delmonico’s coffee bar, but otherwise I can’t easily identify any venues or music pubs
But here are some musical ensembles from the 1960s:
The DARK ANGELS RHYTHM GROUP: Pete Welch (LG), Geoff Lamb (G), Kevin Timms (BG), Steve Gold (D). 1963/4.
DAVE HART COMBO: featuring Dave “Digger” Hart (G/V)
DAWN: Phil Freeman (V), John Davis (S)
Mike DEVON & the DIPLOMATS: (which if it didn’t mean something else, might be called double D!): Geoff McKeon (LG), Keith Francis (G) Tony Smith (G), Colin Wilkinson (BG), Bob Harrigan (D) Terry Wiseman (D). Originally an instrumental quartet until vocalist Mike Devon (Mike Beacon) joined, when they became Mike Devon & the Diplomats. Mike joined Arthur Ward in late 1964.
DRAGONFLY – very young (14/16) late-1960s band, based their sound on early Pink Floyd and later became Fernhill
The DYNAMOS: Marc Tuddenham (G/V), Don Golding (G), Terry Bragg (BG), Alf Pink (D). Got to the Final of ITV’s Ready Steady Win and have a trak on the very rare album of the show, won by the Bo Street Runners (inc Mick Fleetwood). And here they are (who’s that girl?):