Coldplay frontman Chris Martin has sent a video message to a Swiss Cottage special school wishing pupils and staff “a great day” at a community street festival in aid of the school tomorrow.

Ham & High: Headteacher Kay Bedford outside the school. Picture: Nigel Sutton.Headteacher Kay Bedford outside the school. Picture: Nigel Sutton. (Image: � Nigel Sutton email pictures@nigelsuttonphotography.com)

The 37-year-old musician visited Swiss Cottage School Development and Research Centre with his manager Phil Harvey last year after finding out about the school’s innovative work.

Tomorrow, the school will celebrate the return of A Perfect Day festival taking place over a 320m stretch of Avenue Road, including the school site.

Mr Martin, whose mother is a special educational needs teacher, was given a tour of the school during his visit last year and performed Coldplay hit Paradise to pupils in the music suite.

Children also performed the school’s song When We Are Together for the rock star while he gave an impromptu piano rendition.

In a YouTube video recorded especially for the festival, Mr Martin said: “Myself and my best friend Phil came in last year, we had an amazing time hearing you sing the school anthem and letting us watch and enjoy your company.

“Have a great day! Lots of love from me and the whole of the band.”

Sunday’s festival, open to the public between 12pm and 5.30pm, will close Avenue Road to traffic between Adelaide Road and Elsworthy Road.

Festival-goers on the day can enjoy a variety of free musical performances, a funfair and food stalls. There will also be a performance from stand-up comedian Jimmy Carr.

Entry to the festival is free but there is a suggested donation of £5 per family and £3 per person, which will all go to Swiss Cottage School Development and Research Centre.

See Mr Martin’s YouTube video message above.