2 November – The first regular high-definition (then defined as at least 200 lines) BBC Television Service, based at Alexandra Palace in London, officially begins broadcasting (after test transmissions began in August). The service alternates on a weekly basis between Baird's 240-line mechanical system and the Marconi-EMI's 405-line all-electronic system. Programmes are broadcast daily, Monday to Saturday, at 15:00–16:00 and 21:00–22:00.
By this year there are approximately 2,000 televisions worldwide.
