Got bored about midway through which is never a good sign. Strangely enough I still wish it could have beern a two parter, for no other reason than to ratchet up the tension which the story was sorely lacking.
If it weren't for SJA I could swear that the BBC had the same rule as Hollywood, that all children have to be smug, annoying little brats. I was actually smiling when whatsherface got carried off by a cyberman.
Despite that, the best part was Warwick Davis, who pretty much stole the show. Wouldn't mind seeing him again.