The first and only Banzai Records show was actually put together by Rock en Stock.
The second (WWIII) and third (No Speed Limit) ones were the work of independent producers.
Banzai Axe Festival (August 17th, 1985) at the Palladium
World War III Festival (November 30th, 1985) at the Palladium
No Speed Limit Festival (November 11th and 12th, 1986) at the Spectrum
-Agnostic Front (with Billy Milano)
Banzai Axe Festival newspaper ad.
WWIII original poster by Away, and WWIII announcement from Northern Metal magazine.
below, Official posters of WWIII and No Speed Limit Festivals. (courtesy of Ron McGregor)