Summer in the City 2015 - bigger venue, more meet-and-greets, and no Zoella.

This year the vlogging festival, which is sponsored by YouTube, has some high profile names missing from the usual line-up.

Fans already knew that stars such as Zoella, Alfie Deyes, Joe Sugg and Jim Chapman were skipping it in favour of their own event - Amity Fest.

It didn't stop tickets for Summer in the City selling out almost immediately though.

Newsbeat went to the event at London's ExCel, to see if fans, creators and organisers were missing some of the YouTube's most famous celebrities.

TomSka - creator

"It doesn't surprise me at all that different cliques of YouTubers... aren't here this year," says TomSka.

"It makes sense that eventually we're breaking off into separate events based on similar fanbases.

"In an ideal world we'd still be back in a field [where Summer in the City began], but we can't do that any more because there are so many people watching and creating."

Jess, 17, Hannah, 18 and Bethany, 18 - fans

All three are fans of Dan and Phil, and the Saccone-Jolys, who are all at Summer in the City this year.

Not one of them is worried that some of the big names from 2014 aren't here.

"I think they're more of a celebrity status now," says Jess.

"They have Amity Fest now," says Harriet, who says she won't be going to that event. "I prefer the more niche YouTubers.

Tom Burns - organiser

"It was a bit of a worry at first [when Zoella etc revealed they weren't coming] but I think nothing has really changed," Tom tells Newsbeat.

"Here we have an event where you're coming and you're not coming for one creator or one group of creators, you're coming for a wide range of creators and panels.

"It's just like school, you naturally have your friends at school.

"Even in the workplace, you're all colleagues in the wider community but you have those people you prefer to work with, you trust, you're used to working with closely and that's all it is really."

Ramona, 16 - fan

Ramona has come over especially for the event from the Netherlands.

"If they [Zoella and Alfie Deyes] were here, it would be really fun," she says, but adds that it's still a good event without them.

Doug Armstrong - creator

"I think the fact that it sold out within however many hours or days it was says no really," says Doug.

"I think so many people come just because they love the event and they still get to meet a lot of their favourite YouTubers.

"Even when the biggest YouTubers, all of them were here, then the fans couldn't actually have met all of them."

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