The festival's 2007 edition ran Oct 17-Nov 1.
The dates overlap directly with the third Rome Film Fest, which has been rescheduled for Oct 22-31.
Sandra Hebron, who continues as the LFF's artistic director, expects to programme 180 features and 130 shorts.
Hebron said: 'We are very much looking forward to presenting the 52nd edition of the Festival, and have already begun selecting films which will help us in our aim of bringing to London some of the year's finest international cinema. Whilst the Festival will always be committed to presenting exciting new films which otherwise would not be seen in the UK, our October dates also make us ideally positioned to premiere high profile quality titles due for winter and spring release, as well as to showcase some of the most hotly anticipated awards contenders.'