The Prisoner

We had a call last night. She Of The Town House was twittering in great excitement. Part of being chosen Grand Pooh Bah of a whole celtic nation is a stay in the heart of union for training.
She is extolling the facilities and the view from her room.
It seems that from her vantage point high up in some tower she has a direct view over the Thames towards Walworth. She can also see complex mechanical bridge in a bizarre mock gothic style. The room has many attractive stone features. Ethched into one of the windowsills is the legend “Gruffydd ap Llewelyn woz ea”. All seems fine except for some problem with the key.
Meanwhile back at the town house The Boy, Axeman and I are a bit puzzled by what seems to be some kind of humorous ransom demand that we have received bearing the Queens Seal. I have tried ringing the number at the top of the note but it keeps giving strange electronic clicks before transferring me to an ever changing recorded message left by someone purporting to be ‘Number Two’.
Just as a precaution I have looked up “instruction, London, Number Two” on google but there seems to be something wrong with my safe search cookie.
I wonder what’s on the news.

(Hallett's Mountain apologises if the references are obscure but even the walls have noses)