Organisers of Norwich Sound and Vision have hailed the festival's success, following a weekend in which more than 9,000 people enjoyed an eclectic multi-media mix of music, film, games and writing.

The expanded festival saw attendance number rise by nearly 40pc, according to early estimates, as venues across the city opened up for the three-day event.

Festival director Adrian Cooke said that, in its fourth year, Norwich Sound and Vision had 'now found the right model'.

'We don't need to make it any bigger, just widen the offer. We've found the right shape but there is still capacity at some of the venues, so now we just need to build the numbers.

'This year was much bigger, there was much more on offer and much more variety, both for the festival and the conference. We've had nothing but amazing feedback from people.'

Mr Cooke said the success of the games expo, which was held in 2013 for the first time, had been satisfying, as had the inclusion of new venues such as the Birdcage and Epic Studios.

But with venues spread across the city, he said next year's festival could include a shuttle bus service between them, especially for the conference.

He also thanked the team of staff and volunteers at each of the venues for their contribution to the festival.

'The other thing is how many national and international visitors we are getting, and how many are industry people coming because this is where they have to be,' he said. 'We are beginning to be recognised as a national and international festival.

'When people leave they say they wish they were staying longer at the festival, or that they could just hang around longer in the city.

'Norwich is a very unique city, as the people who live here know, and it's a great place for a festival like this.'