Should we be expecting an AAIB interim report by Friday?
It would be very unusual for the AAIB to issue either an Initial or Interim Report other than in the case of a fatal accident (for example the Bond Super Puma) or a complex investigation (such as BAW38).
This
Air Accidents Investigation: Deployment to Heathrow 24/05/13
is likely to be all we see until the investigation is complete.