This page explains how much it costs to come to the United Kingdom as a film crew member on location without a work permit.
If you are a non-European Economic Area national and need entry clearance before coming to the United Kingdom, you should see the U Visa Services website for their list of current fees.
If you need to extend your stay (further leave to remain), and are applying to do so, see the section on further leave to remain, the current fee is £350 for applications made by post and £550 for applications made in person at the Croydon public enquiry office. To use the premium service at the Croydon public enquiry office you have to book an appointment in advance.