12a Tiddly castle rebuilt for old game show (5,7) ????? ??d????
18a Current instrument creating near megavolt (12) t?????o?e???
20a Hidden yen grabbed by minion (10) ?r?????i?g
5d Penny on Eurostar, travelling with extinct creature! (9) ???????u?
13d Five trapped by mice, I rely on moving BBC newsreader (5,5) ??i?? ???i?