The business reality show averaged 5.98m (25.2%) on BBC One in the two hours from 8.45pm, peaking at 6.89m (27.8%) as Lord Sugar chose his next business partner.
Earlier in the day, the BBC benefited from the dismal weather in London to attract an average audience of 10.33m (55.9%) viewers to its coverage of the Queen's Diamond Jubilee celebrations, between 1.30pm and 6.15pm.
Gary Barlow: On Her Majesty's Secret Service, about the Take That star's creation of a song for the Jubilee, was seen by 6.35m (27.7%) on BBC One from 7.45pm. The Diamond Jubilee Thames Pageant Highlights sailed away with 1.49m (16%) from 11.15pm.
Over on ITV1, All the Queen's Horses: A Diamond Jubilee Special enthralled 3.68m (17.2%) from 6.30pm and 139k (0.6%) on ITV1+1, but lost out to Countryfile's 6.38m (30.7%) on BBC One.
A Sunday night episode of Coronation Street was enjoyed by 5.91m (23.4%) on ITV1 from 8.30pm and 257k (1.1%) on +1. Afterwards, Vera captivated 4.56m (19.9%) and 173k (1.1%) on +1.
Singapore 1942: End of Empire was seen by 720k (3.4%) on BBC Two in the 7pm hour, and then Indian Ocean with Simon Reeve grabbed 1.63m (6.8%) from 8pm and 160k (0.7%) on BBC HD.
Coast pulled in 1.69m (6.9%) in the 9pm slot and 102k (0.4%) in HD. TOP2 stayed tuneful with 820k (3.7%) from 10pm and When Disco Ruled the World delighted 900k (5.5%).
Channel 4's Super Scrimpers: Hot Summer Tips averaged 620k (2.6%) from 8pm and 213k (0.9%) on +1, before a screening of sci-fi blockbuster District 9 excited 1.38m (6.1%) from 9pm and 352k (2.2%) on timeshift.
A showing of Big Daddy entertained 938k (4.5%) on Channel 5 from 5.45pm and 157k (0.7%) on +1. Once Upon a Time delighted 973k (4.4%) from 7.30pm and 179k (0.7%) an hour later.
Ultimate Police Interceptors took 503k (2%) on Channel 5 from 8.30pm and movie The Ninth Gate thrilled 712k (3.4%) from 9pm.
A new episode of Family Guy topped the multichannel ratings, after 872k (3.9%) tuned in to BBC Three from 10pm. Another episode of the animated US show pulled in 848k (4.1%) from 10.25pm.
BBC Four's The Two Thousand Year Old Computer educated 558k (2.3%) from 8pm. Desperate Housewives racked up 474k (2.3%) on E4 from 10pm and 236k (2%) on +1.
