The first part of 'Monarchy: The Royal Family at Work' was watched by a 25.7% share of audience between 8:30-10pm, according to unofficial overnight figures. It is set to run for a further four weeks.
The new series became embroiled in a row earlier this year when a promotional tape, edited out of sequence, gave the false impression that the Queen had stormed out of a photo shoot in protest at being asked to take off her crown.
The incident was reported by the national press as fact following a press preview of the programme at the BBC, but the corporation later admitted the Queen did not leave a portrait session with celebrity photographer Annie Leibovitz.
ITV scheduled an extra episode of 'Coronation Street' followed by the latest instalment of 'I'm a Celebrity... Get Me Out of Here!' in the same slot.
'Coronation Street' eclipsed 'Monarchy' with 9.9m viewers and a 38% share of viewers between 8.30-9pm.
'I'm a Celebrity...' continued ITV1's continued dominance of the primetime slots with 7.9m viewers and a 31.6% share between 9pm-10.30pm.
Channel 4 debuted the harrowing one-off drama 'Boy A' in the 9pm-11.05pm slot. The acclaimed film, in which Peter Mullan stars in a story about a young boy forging a new life and identity after being released from prison, was watched by 1.4m and a 6.4% share.
Although aired on TV in the UK, the film is to get a cinematic release in the US after the rights were bought by Harvey Weinstein.
Pic: BBC/RDF/Ian Jones