BFI London Film Festival
Deadlines: Short films (less than 30 mins): 24th June,Full length features: 8th July

Cannes

Edinburgh International Film Festival

Encounters Bristol International Film Festival
Deadline for submission 30th June

Guardian Edinburgh International Television Festival

Glasgow Film Festival

Kids for Kids UK Festival
Deadline for submission 31 July, 2011

Kinofilm Manchester Short Film Festival

Latin American Film Festival

Leeds International Film Festival

Raindance Film Festival
Late deadline is 3rd June

Rushes Soho Shorts Festival

Sheffield International Documentary Festival

Sundance Film Festival

Venice Film Festival

Virgin Media Shorts
Entries close at 12pm on 7th July

The Birdies Film Festival
Deadline 10th June

International Rome Film Festival
Deadline August 5th

Minghella Film Festival on the Isle of Wight

Clermont International Short Film Festival

LA Shorts Fest

In The Palace – International short film festival Bulgaria