the Blerta bus

 

Blerta stood for the 'Bruno Lawrence Electric Revelation and Travelling Apparition', basically a jazzy soft rock band, but incorporating other forms of entertainment and in the mid-1970s had its own late night TV show, which tended to 'push the envelope' in terms of content.  A 6 part doco is here.

The bus that the band travelled around in was a post-WW2 Leyland OPS3 export version of the Tiger half cab.