A camping event set to happen in Clapham Common during the Royal Wedding Weekend has not been granted final approval by the council, it has emerged.

Organisers Camp Royale are already selling tickets for the weekend of April 29, when Prince William and Kate Middleton are set to tie the knot, but Lambeth Council has admitted the event has not yet been approved.

The council vowed to consult with residents and councillors before a final decision is made, despite the Royal Wedding being only six weeks away.

Councillor Florence Nosegbe, cabinet member for culture, sport and the 2012 games said: "The Camp Royale event has not yet been approved, but has been granted an ‘in principle’ agreement for a family event with a campsite of 1806 tents and capacity of 4000 people.

"This means that the council is satisfied that the event can be run safely within the council’s strict guidelines.

"The next stage is to discuss the proposal with local residents and elected councillors before a final decision about whether the event can take place.

"If agreed, the campsite would be managed totally separately from any event activity on the common. The entertainment will be accessible to all Lambeth families free of charge to enjoy this special day.

"All the events we run on Clapham Common have restrictions on noise levels, health and safety and adhere to all the normal by-laws in force at the park."

Yesterday, MP for Streatham, Chuka Umunna, questioned whether the plans should go ahead.

Camp Royale plans to turn Clapham Common into a campsite for those celebrating the Royal Wedding and to broadcast the event on giant screens, with capacity for 10,000 people.

Although one-day festivals take place annually on Clapham Common such as Ben and Jerrys’ Summer Sundae and Get Loaded on the Common, a three-day event with camping is unprecedented on the public open space.

Half of Clapham Common, including the site where the event is due to take place, is within Mr Umunna’s Streatham constituency. Mr Umunna has been contacted by constituents who are concerned about the impact of the proposed event.

He has registered his concerns with Lambeth council and vowed to keep his constituents informed on the issue.

He said: “I was delighted when I heard the happy news about Prince William’s engagement to Kate Middleton and will be celebrating their wedding day as will many of my constituents, but I have deep reservations about this event and have already been contacted by concerned local residents about it.

“It is quite unprecedented for something on this scale to take place over three days on our Common, with people camping on it for the duration – we do not want to see Clapham Common turned into a Glastonbury style venue - albeit slightly posher - with all that would involve and the inevitable disruption to the daily lives of my constituents.”

Lambeth council have so far refused to say whether or not it has granted permission for the camp site to go ahead but campaign groups have expressed concerns over whether the common can support 10,000 people.

Organisers are also offering luxury 18ft tipis for those wanting a "boutique hotel" experience.

A camping pass is set to cost £75 from April 28 to May 1. Luxury tipis are £2,000 each and can hold up to six people.

Camp Royale has not yet commented on the issue.