Here's another seemingly unlikely venue for some of the top rock acts of the sixties. In 1965/66, at least, the Ultra Club was at the Downs Hotel, Hassocks. I'm not sure exactly where that is/was. Searching online for the Downs Hotel, Hassocks throws up one reference only to an hotel of the same name in Keymer Road, Hassocks (q.v. http://www.francisfrith.com/keymer/keymer-downs-hotel-c1955_k127015
). But as I can find no current reference to this, I wonder if it's disappeared in the subsequent half century. There seems to be an Ultra Club in existence today, which is at the Hassocks Pub, Station Approach East, Hassocks - which I assume not to be the same location as that of the Ultra Club of the sixties and thus I assume that in its name the current club pays tribute to its predecessor.
It seems that either the Who liked playing at the Ultra Club or that those who frequented the Ultra Club liked the Who. The Who played three gigs there in 1966 - on 2 January, 29 August and 11 September. That same year saw the Hollies play the Ultra Club on 16 January. The Yardbirds were to have played there on 19 January but cancelled. Had they not done so, the 'groovers' of Hassocks would have had quite a January!
The Yardbirds did play the Ultra Club in 1965, appearing there on 4 April. Had you wanted to see Eric Clapton on guitar, you'd have been disappointed. He'd left the group a month earlier. So you'd have had to put up with Jeff Beck instead! But the Hassocks fans of 'Slowhand' wouldn't have had to wait long to see their idol playing in town for John Mayall's Bluesbreakers had a gig at the Ultra Club on 11 July. In addition to Eric Clapton and John Mayall, on stage would have been John McVie (later of Fleetwood Mac) and Hughie Flint (later of McGuinness Flint and the Blues Band).