thats if the shop has CCTV installed and if it was caught on camera and if the shop owner really wants to take all the crap that comes with allowing the police access to their CCTV equipment.
even if there definetly wasnt CCTV it would still be worth reporting
and like many other have said , dixxy chicken are a huge franchise with shops all over the country. they will most likely have CCTV. and they would legally have to give the police it. not really hassle anyway is it ?