BOAC,
Just looking back at the AAIB Report, they say: " ...examinations of damaged areas revealed that the greatest heat damage and highest temperatures were centred on the rear fuselage close to the crown ... and corresponds to the most damaged external areas, with blackening and peeling paint and damage to the composite structure."
Ref the last part (my italics) I would say that there is no 'hole' as such; I imagine that the Report would have used expressions like 'damage including penetration' had this been the case.