La Rochelle.
However, IME, East Midlands / Bournemouth (accounts done by the same office) mess up more invoices than they get right (largely due to the bizzare Bournemouth Handling setup) and I bet these two have a long list of "drive-aways" who don't actually exist. To be fair, it can be hard to track down some planes and I did explain to one office lady how to use google to track down where people are based so the bill can be sent there...