I've just discovered that a Midlands progressive rock band originally called themselves the MBs or the MB Five in the early 1960s in the hope that they'd get sponsorship from the Mitchells and Butlers brewery, which is often referred to as M&B. Both the band and the brewery are from the Birmingham area.
As they didn't get the sponsorship, they expanded their name to The Moody Blues and the rest as they say (etc). Who knows what could have come of it? Their big single might have been "Pubs That I've Sat In".