He piloted two weeks of Housecall for BBC and Trading Up before appearing on BBC's hit show DIY SOS. Two series of UK's Worst for the BBC set record viewing figures for an investigation programme at 7 million. The quiz series Judgemental added to Nick's broad range of shows.
A trip to Nairobi for Comic Relief in 2003 produced an extraordinarily touching report which showed this former rugby player's softer side. The all new Secrets of Magic for Saturday night BBC1 and the writing, research, development and presenting of the ground breaking and wacky history programme Guy Fawkes And The Gunpowder Plot for BBC1 on Sunday night with an amazing almost 7 million viewers rounded off a pretty wide ranging and creative year for Nick. DIY SOS continued into series 8, 9, 10 etc followed by a six part series off the back of the successful Gunpowder Plot. Histrionics was a family comedy history drama researched, written and presented by Nick. Another 'Secrets of Magic' special was well received followed by a one off History format called Celebrity Time Machine. Nick then went to Zambia where he shot a heart rending report for Sport Relief.
2006 saw series 12a and Nick also brought a series of live shows from 'Behind Bars' on daytime TV from Cardiff prison. Nick saw in the new year with the BBC coverage of the midnight bongs of Big Ben on New Year Live.
2007 kicked off with Mission Africa where fifteen apprentices were guided by Nick Knowles and Major Ken Hames through six weeks living in the African bush providing security, a wildlife reserve and safe drinking water for the Samburu people in a drought hit region of northern Kenya. The fantastically popular DIY SOS continues along with a brand new series about weddings called The Big Day and an amazing film on the plight of Orangutans in Borneo as part of the grand finale of the Saving Planet Earth series.