However, the NTAs was the most watched programme of the evening, aside from the ITV soap, which pulled in 6.4 million.
The show, hosted by Dermot O'Leary, attracted it lowest audience since 2008, according to overnight figures.
The instalment was watched by 5.4 million while last year's saw 5.5 million tune in, following a hiatus in 2009.
National Television Awards 2017 pulled in its lowest viewing figures since 2008 last night
National Television Awards 2017: Emmerdale scooped the best drama for the first time ever
Inside the National Television Awards 2017
Wed, January 25, 2017
All the winners from the 2017 NTA's
1 of 66
Mary Berry reacts to winning the Best TV Judge during the National Television Awards
The NTAs had a 25 per cent share of viewing – and a peak audience of six million, ITV has said.
The bash beat rival shows in the same time slot, including Who Do You Think You Are? on BBC One.
Coronation Street continues its success as those at home tuned in eager to follow the heartbreaking miscarriage storyline between Michelle (played by Kym Marsh) and Steve McDonald (Simon Gregson).
National Television Awards 2017: Coronation Street beat the ceremony
National Television Awards 2017: Ant and Dec triumphed yet again
Meanwhile, it was a good night for Ant and Dec, who won three awards in total, including the presenter award for the 16th consecutive year.
They won the entertainment programme prize for their show Saturday Night Takeaway, and I'm A Celebrity… Get Me Out Of Here! won in the challenge show category.
Graham Norton was awarded the special recognition award for his years of service to broadcasting.