Something is definitely strange here.

Apparently our e-tickets have an Air France prefix but we are flying with British Airways. Obviously Air France has no links to BA.

I have spoken with BA about this, the agent I spoke to has never seen this before and cannot see how the travel agent has managed to do this but he added that all appears to be ok with the booking.

Weirdly I can see the booking including the "Air France" e-ticket numbers when I view the booking on the BA website and App.