Brentford festival organisors suspect someone could be attempting to sabotage the event after their advertising banner was stolen.

The banner advertising the event on September 7 was hanging between trees in Boston Manor Park for two months, before it was stolen sometime between the night of Saturday, July 26 and the morning of Sunday, July 27.

Linda Massey, event organiser, said: "This is quite demoralising. We are a team of Ealing and Brentford volunteers trying to put an event together for the benefit of all the community.

"We are very dissapointed that someone's anti-social behaviour can have such an effect on our planning."

The six-metre-long banner, which was sponsered by local business Allsigns, cost several hundred pounds so organisers are keen to get it back.

Organisers are urging anyone who finds the banner to either roll it up and leave it in the park near where it disappeared or ring Linda Masey on 07831 106973.