This is great - exactly the kind of thing I was looking for the one time I had a trip booked on BA4... in the end I never did get to fly the A318, as I had exceptionally bad luck with cancellations (Icelandic volcano activity at first, and then a diversion of inbound flight that caused me to get re-routed on a 747 to LHR).

If I ever get a chance to try again for this service, now I know where to look!