Who is the mysterious “Silicon George” that David Cameron mentioned at Prime Minister’s Questions?

Could the Prime Minister possibly have meant his Chancellor, George Osborne, who has famously had a makeover in recent months?

The search was on after the Prime Minister mentioned the name in answer to a question.

The Tory leader joked that he had misheard the name of a West Country-based cluster of tech and research companies dubbed, wait for it, wait for it, “Silicon Gorge”.

Mr Cameron jokingly replied: "I'm certainly keen to support 'Silicon Gorge'.

"I thought you'd said 'Silicon George' for a moment," he added "I was a bit worried about that."

Has the Chancellor accidentally been saddled with a new nickname?

In many ways it was a muted PMQs, perhaps as Labour looked as if they did not want to get in the way in case Tories began savaging each other over Europe.

There were skirmishes around the side however.

One Tory MP asking a question that appeared to be designed in large part to please his own frontbench provoked the ire of the oppose side and in particular Diane Abbott.

She appealed to the Speaker John Bercow to intervene with that time-honoured international hand signal of tapping on her watch insistently.

Later when Jeremy Corbyn stood up and thanked the Speaker for calling him, one Tory backbench wag shouted “too long”

But it was off to the right hand side where many wondered if the real action was happening.

There, standing listening to the Prime Minister answer questions, but not sitting on his frontbench, were two of the cabinet ministers considered among the mostly likely to oppose his call for the UK to stay in the EU, Iain Duncan Smith and Theresa Villiers, the Northern Ireland Secretary.

Will they sit eventually, MPs wondered, or will they continue to stand?