Wednesday 20th February 2013 by Grace Carroll | Photos by WENN

Tags: Muse, The Brit Awards

Muse have been told that they have to cut back their plans for their performance at the BRITs tonight - and by 'plans', it's mostly referring to their pyrotechnics.

The band are nominated for both Best Live Band and Best Live Act, and are set to open the show.

So far, their plans for the performance involve 60 dancers, and include fireworks exploding over the heads of the audience.

But the number of fireworks has had to be cut back, as it's worried that they could start a fire.

A source told the Daily Mirror, "Bosses were concerned at the amount of pyrotechnics on stage so told Muse in no uncertain terms to cull the fireworks.

"There will be around 20,000 people inside the O2 and organisers couldn't risk causing a blaze or injury."

The BRITs have also had to draft in 20 extra security guards just for the attention that One Direction are sure to attract.

One Direction need extra security from all their female fans

The source continued, "There's already a massive buzz online about One Direction being here and some girls have even planned to fly in from abroad just to catch a glimpse of them.

"We can't afford to take any chances with security so we're drafting in extra people to cope if things get out of hand."

As well as One Direction and Muse, other acts scheduled to perform include Emeli Sande, Justin Timberlake and Taylor Swift.

BRIT Awards launch: photos from the 2013 event