9 February—The Africa based BBC journalist and producer Kate Peyton is killed in a shooting incident in Mogadishu, Somalia while reporting on that country's nascent peace process.
19 February—EastEnders celebrates its 20th anniversary on the air, airing a special episode in which Dirty Den Watts is killed by his new wife Chrissie. 14.34 million watch the episode (shown on 18 February). It is the UK's second highest rated programme of 2005 (the first was an episode of Coronation Street three days later).
26 March—Nine years after its last new episode and sixteen years since its last regular run, Doctor Who returns to BBC One for a new series, the twenty-seventh in total since 1963. Christopher Eccleston and Billie Piper star. An average 10.81 million viewers, over 40% of the watching audience, tune in, winning its timeslot and making it No. 3 BBC show and No. 7 across all channels for the week. The episode went on to become the UK's 7th highest rated programme of 2005.
2 April—Digital channel BBC Four broadcasts a live re-make of the famous 1953 science-fiction drama The Quatermass Experiment. The production is the first live drama broadcast by the BBC for over twenty years, and draws BBC Four's second highest audience to date, with an average of 482,000 viewers.
17 July—After forty-one years broadcasting on BBC One, music show Top of the Pops is switched to the less mainstream BBC Two channel due to declining audiences. This is not enough to save it, and it is axed the following year.
1 August—BBC Broadcast, formerly Broadcasting & Presentation, and responsible for the playout and branding of all BBC Channels, is sold to Creative Broadcast Services, owned by the Macquarie Capital Alliance Group and Macquarie Bank. It is renamed Red Bee Media on 31 October.
8 September—Faze TV, a British digital channel aimed at gay men, cancels its launch after failing to secure sufficient funding to deliver "sufficient quality."
27 October-16 December—Bleak House, a 15-episode adaptation of the Charles Dickens novel of the same name designed to capture a soap opera-style audience by using Dickens's original serial structure in half-hour episodes, is broadcast on BBC One.
31 October—Sky3 is launched on British digital terrestrial and satellite platforms. On the same day Sky Mix is rebranded as Sky Two, and Sky Travel ceases transmission on Freeview.
1 November—ITV4, a digital channel aimed at men, is launched in the UK. It is launched on Sky Digital Channel 120 on 7 November.
15 December—Sir Trevor McDonald makes his final ITN news broadcast after over 25 years. As a tribute, the closing theme tune for the News at Ten Thirty that night is replaced with the News at Ten theme used from 1992 to 1999, McDonald having presented the show during that time.