Cameras and lightening crews were spotted in one of Bristol's oldest and quaint squares.
Crews have been busy filming at Berkeley Square all afternoon but everyone on the set remained tight-lipped about what they were shooting when quizzed by Bristol Live .
Pictures from the square today (July 11), show a huge crane being used to capture areal views of the city centre loction.
Crews could also be seen carrying props in and out of one of the square's Georgian style buildings.
A witness told Bristol Live he could hear a lot of Welsh accents which could be a clue they were filming for hit BBC TV series Casualty which is based in Cardiff.
The hospital drama used to be filmed in Bristol until 2011 when it moved across to the Welsh capital.
Do you know what was being filmed? Send your comments to emma.grimshaw@reachplc.com
