Hawker Siddeley Dove B Aircraft

A picture of a Hawker Siddeley Dove B aircraft which was presumably taken during an airshow because the aircraft has a name board in front of it. Although I don't know for certain the data of the picture, it was taken on 127 format colour slide film which means it was probably taken earlier than 1970, because by that time most photographers were using either 35mm or 120 film.