Well, I'm now taking a different route to a long haul destination which I would have made in J/C as BA expect me to overnight in LHR as the first flight from ABZ on a Saturday or Sunday only gets in at 09:50.
Now I'm not sure if this has always been the case, I would probably expect it on a Sunday but it's too late to connect to a long haul I need to get to arrive in the ME for the start of the business week on a Sunday!