2. Various of shop selling England memorabilia on Westminster Bridge
3. Pan from Westminster Bridge to Parliament
4. Close of Parliament
5. People crossing bridge
6. Set up shot of Professor Anand Menon, Professor of European Politics and Foreign Affairs, Kings College London
7. Mid of Menon
8. SOUNDBITE (English) Professor Anand Menon, Professor of European Politics and Foreign Affairs:
"The beauty about the current situation is that nothing seems to be impossible. So I wouldn't rule anything out at this point including the United Kingdom staying in the European Union. I think it would be a very difficult thing to pull off, and I think a lot of things would have to happen first, but at this moment don't discount anything."
10. SOUNDBITE (English) Professor Anand Menon, Professor of European Politics and Foreign Affairs: (Question - what are the chances of Parliament ignoring the referendum?)
"Very slim I'd say because parliament are ultimately elected by the people. Over 50 percent of the 70 percent who voted, voted to leave, and I think for both major parties, Conservative and Labour, such a high proportion of their voters voted to leave that if they were to so blatantly disregard the vote they would face electoral punishment afterwards. Particularly Labour where UKIP is pushing them hard in many of its northern heartlands."
12. SOUNDBITE (English) Professor Anand Menon, Professor of European Politics and Foreign Affairs: (Question - can't parliament just re-run the referendum like with Maastricht and Ireland?)
"We've seen it with the Danes as well, back with the Maastricht treaty. Short answer is I think, no. And the reason is in all those cases what happened was the other member states fiddled with the text of the treaty and said 'OK, here a slightly revised version, do you want to try again'. I don't think you can do that with British membership because A, I think we got all we could have got in February, and B there is nothing significant about the terms of our membership you could change before having a second vote. Thirdly I just think if you say, OK ,we didn't like the result of the first vote, we're going to give you another chance, if you think that part of this vote is based on distrust for and dislike of politicians, that's just going to get worse if you ignore the result."
14. SOUNDBITE (English) Professor Anand Menon, Professor of European Politics and Foreign Affairs: (Question - if there was a general election, could a party run on a Bremain ticket?)
"I supposed it's just about conceivable, but it's only the Lib Dems that could actually do that. Both the Conservatives and Labour party have significant numbers of leavers in their ranks. If either of them did that, they might attact support from elsewhere but they're also going to haemorrhage some of their own supporters who voted for Britain to leave."
A leading politics and foreign affairs expert says it's not impossible that the United Kingdom may yet turn its back on the outcome of the referendum on European Union membership and choose to remain within the group.