London - 23 November 2016

1. Pro-Brexit supporters at rally, UPSOUND of chanting (English) "What do we want? Brexit. When do we want it? Now."

2. Various of pro-Brexit demonstrators

3. Various exteriors of UK Parliament

4. Carl Emmerson, deputy director of the Institute for Fiscal Studies, outside Parliament

5. SOUNDBITE (English) Carl Emmerson, Institute for Fiscal Studies (IFS) deputy director:

"A lot of it is attributed to the fact that the UK has decided to vote to leave the European Union. There's increased uncertainty in the economy. That is pushing down growth. There's higher inflation, which is pushing down consumer spending. So that's expected to bear heavily on the economy over the next few years, which in turn will hit on tax revenues and push the government finances further into the red."

6. Cutaway of Emmerson

7. SOUNDBITE (English) Carl Emmerson, Institute for Fiscal Studies (IFS) deputy director:

"What the (UK's) Chancellor (Philip Hammond) has chosen to do is to push back his fiscal rules, loosen those fiscal targets, so he's got more headroom. He's chosen not to use that headroom all up with giveaways today. So what that means if things go worse, wrong over the next few years, if things deteriorate further relative to what the OBR (Office for Budget Responsibility) expects, he's got headroom. Or if he wants to announce some giveaways to try and help the economy for example in the March budget or in next year's Autumn statement he can do that. So he's left himself some headroom by relaxing those fiscal targets."

8. Brexit supporters at rally

9. Demonstrator holding sign (English) reading: "It's time to leave.eu"

10. Brexit supporter holding sign (English) reading: "We want our country back", UPSOUND (English) "What do we want? Brexit. When do we want it? Now."

11. Woman draped in British flag at protest

12. Kim Rose, UKIP candidate for Southampton and organiser of rally, leading chant, UPSOUND (English): "(UK Prime Minister) Theresa May - don't delay"

13. SOUNDBITE (English) Kim Rose, UKIP candidate for Southampton and organiser of rally:

"We've organised this because it's been five months since we had our referendum, five months for people to decide what we want. Parliament feel that the people are stupid and that they know different when quite frankly it was the people that actually died in the Battle of the Somme and it was the people who stood on the beaches of Dunkirk. It was the people who fought the Battle of Britain, and now today it is the people that are saying: 'we want what we voted for'."

14. Brexit supporter Tom Twigger at rally

15. SOUNDBITE (English) Tom Twigger, Brexit supporter:

"Millions of pounds they've robbed from the British people, millions of pounds. And now they're trying to rob the nation of it's nationhood, it's sovereignty and put us into a world populous with no democracy."

16. Various of rally

Protesters demanded "Brexit now" outside parliament in London on Wednesday, as the Treasury chief announced the first budget update since the referendum, saying Britain will have less money, more debt and a slower economy in coming years.

Philip Hammond delivered the economic statement to a less-boisterous-than-usual House of Commons as the country faces unease over the future and prepares to lock horns with the European Union next year on its exit from the bloc.

Though Hammond could take some solace in the resilience of the British economy in the months following the seismic June 23 referendum, the future is uncertain.

He said his goal was to get the economy "match fit" for the next chapter.

Meanwhile Brexit supporters said they felt that their elected representatives did not act fast enough to leave the European Union in the wake of the referendum.