For the BOS-LHR leg the gardener was in the M-cabin on a M-fare-basis. For the LHR-EDI leg he still had a M-fare, but was in the C-cabin (BA should use a different cabin code for the Shuttle, as it doesn't compare to Club Europe...)
bagold - I look forward to hearing what happens with your sister's trip: hopefully she'll receive all her miles.
baobab