Commuters travelling through St. Pancras station, who didn't use the snow as an excuse not to bother going into work, were treated to a double bonus - footage of Lara Croft on the world's biggest iPhone (sort of) and the chance to take away an iPad, for free.

The "sort of" is because the iPhone wasn't really an iPhone at all - but a mock up giant handset with the display being constructed by 56 Apple iPads.

The idea behind it all was to celebrate the launch of Lara Croft and the Guardian of Light on the iPad, iPhone and iPod touch.

The mock-up only lasted half an hour, once the promo team started giving the iPads (pre-loaded with the game of course) away.

"Gaming on the move is a fantastic way to keep entertained on those long winter commutes", said Darrell Gallagher, studio head of Crystal Dynamics.

"With temperatures in the UK set to drop again this week people need this today more than ever".

Lara Croft and the Guardian of Light is available in the App Store now, priced at £5.99 for iPad version and £3.99 for the smaller screen one.