@Dave the Gnome:
On the Saturday before Remembrance Sunday there is a Matinee performance of the Festival of Remembrance which is open to the public this is followed by the evening performance which is televised, the latter is restricted to guests invited by the Royal British Legion, Serving Forces personnel and members of the Royal British Legion - so, as far as the evening performance is concerned, it is not a matter of being able to afford a ticket, I doubt that you would be eligible to attend.