The annual ceremony attracted 5.15m (24.7%) at 8.15pm on ITV - down around 250,000 viewers from last year. A further 363,700 (2.0%) tuned in on +1.
The final Britain's Got Talent before this series' live shows topped the evening's ratings with 7.76m (38.9%) at 7pm (666k/3.2%), while Perspectives pulled in 1.44m (9.5%) for ITV later on (69.2k/0.7%).
BBC One's new Gabriel Byrne series Quirke was watched by 4.18m (20.2%) at 9pm, while Sunday evening stalwarts Countryfile and Antiques Roadshow interested 4.80m (24.4%) and 4.82m (23.3%) respectively.
BBC Two spoof Harry and Paul's Story of the Twos amused 1.26m (5.9%) at 9pm, followed by an Absolutely Fabulous repeat an hour later with 1.29m (6.7%). Tropic of Cancer had earlier amassed 0.49m (2.5%) at 7pm, and Top Gear 0.91m (4.4%) at 8pm.
Fargo continued on Channel 4 with 0.95m (4.5%) at 9pm (156k/0.9%), and Matthew Vaughn's Kick-Ass got 0.65m (5.0%) at 10.05pm (212k/2.8%). For the Love of Cars previously zoomed away with 0.72m (3.5%) at 8.30pm (146k/0.7%).
Meanwhile, Nicolas Cage double header Ghost Rider and Drive Angry thrilled 665k (3.2%) and 689k (4.8%) on Channel 5 (170k/0.9% and 154k/1.8%).