Scenes for 'Bridget Jones's Baby' were filmed at an Ed Sheeran concert.

Some of the first scenes for the eagerly-anticipated third movie were shot at the 'Thinking Out Loud' hitmaker's Croke Park show in Dublin last month, with Bridget sitting on the shoulders of a mystery man in the audience, although actress Renée Zellweger was no-where to be seen as producers used a stunt double so as to not arouse attention.

A film source revealed: ''There was no risk in filming Renée at a busy gig. But they knew the cat would be out the bag the minute people saw her at the show.

''Renée's body double and the cameramen were in and out of the crowd as quickly as possible.''

Following on from 2001's 'Bridget Jones's Diary' and 2004's 'Bridget Jones: The Edge of Reason', the third installment is expected to be released next year, although full production has not yet started.

The source told The Sun newspaper: ''These are the first moments in early filming for the new movie. None of the show's main talent have been involved yet.''

The news will excite fans of the unlucky-in-love protagonist as doubts had been cast over the film when producers brought in Emma Thompson to drastically rewrite parts of the script at the request of the film's stars.