01-06-2022, 11:37 AM
The notes I have suggest BGC was completed in the month of first issue, ie June 934, so I was guessing that it ran through to early July. After BGC London issued more B-prefix sequences, BGF, BGH and BGJ all in June 1934, then BGK,N,O & P in July, BGT,U & W in August, and so on. The last B-prefix London issue was BYY in July 1935, before starting with the C-prefix sequences.