BBC Two until 23 October 2012, via the Ceefax teletext service. The BBC also offers audio description on some popular programmes for visually impaired-viewers as well as sign language interpretation on some of its programmes for deaf and hard-of-hearing viewers. The percentage of the BBC's total television output with audio description available is 10%, having been increased from 8% in 2008. Originally, programmes from BBC Two were shown in high definition on the dedicated BBC HD channel, alongside programmes from BBC Three and BBC Four, as well as some select series from CBBC and CBeebies. However, in plans outlined by the director
Service Information address of the BBC Engineering Information Department. The bulletin would then end with a rundown of the trade test colour films being shown on that particular day. ""And now we are returning to the colour test card and music until "Play School" at eleven o'clock"" would be a familiar closing phrase. "Service Information" bulletins generally lasted an average of two or three minutes but on Wednesday 25 August 1971, the longest "Service Information" bulletin known was aired, which ran for 11 minutes. A Monday to Friday "Tuning Information" bulletin was added to BBC2 in the heyday of colour coming to