A question for the ex-Canberra community ...
Would that Barbers Pole have likely caused any significant handling issues in asymmetric flight ... say on approach ? Presumably crews would have been required to undertake regular CT including asymmetric config ... just a genuine interest really.
I think the leading edge of the fin on that aircraft has been extended?
I discovered recently on looking at the Canberra at the Solway Museum at Carlisle airport that the leading edge of the fin is wooden. This was apparently so that it could be more easily trimmed during initial testing. It would thus be relatively easy to add a bit to the leading edge of the fin if necessary.