BIG =
Broadband International Gateway
...
Babcock International Group
Babcock International Group plc is a British multinational corporation headquartered in the United Kingdom, which specialises in support services managing complex assets and infrastructure in safety- and mission-critical environments. Although the company has civil contracts, its main business is with public bodies, particularly the UK Ministry of Defence and Network Rail. The company has four operating divisions with overseas operations based in Africa, North America & Australia.
It isn't listed verbatim on the Q drops page, but I have a vague memory that it was discussed by some of the bakers.
Good digging Bigg Red, on “BIG”
(They misspelled it, didn’t they? They left out that second “G”!)