See page 98 of the Lemmy White Line Fever book. He mentions having known Larry when he was in UFO before the Pink Fairies. See the You Tube footage I posted links to in that section... He almost certainly played on the same stage as Larry as Pinkwind when Pink Fairies and Hawkwind played together. They were known for jamming altogether on a couple of numbers at free festivals. It would be great to see photos of this if they exist. I think Windsor 1974 may have been one of those occasions...
It is also well-documented in the Forced Exposure interview with Larry that he moonlighted with the Pinks at the same time as Motorhead, for example during the recording of On Parole when he did not get much sleep between recording sessions with Motorhead and live giogs with the Pinks. This eventually led to him losing enthusiasm / energy for Motorhead when Eddie came onto the scene in early 1976. I recently read in a Clash book that Philthy Animal actually auditioned for the Clash during this period!