BBC2’s Wonders of the Solar System and Channel 4’s Restoration Man were strong factual performers on Sunday night, but ITV1’s Boyzone: a Tribute to Stephen Gately led the way.

The latter aired after Dancing on Ice and was watched by a slot-winning 7.5m (27.9%) between 8.30pm and 9.30pm, according to overnight figures from Attentional.

It was broadly in line with ITV1’s slot average and did well enough to beat BBC1’s Lark Rise to Candleford, which got 5.8m (21%) between 8pm and 9pm, and Seven Ages of Britain, which was watched by 3.3m (12.6%) between 9pm and 10pm.

The seventh and final episode of Seven Ages was slightly below slot average and although it has had critical acclaim it is in danger of being out-rated by BBC2’s Wonders of the Solar System. The third of the five-part BBC2 show aired over the 9pm hour and was watched by an impressive 3m (11.3%).

That was enough to outperform the debut episode of C4’s eight-part Restoration Man, which started solidly. The series, fronted by architect George Clarke, made a good debut with just over 2m (7.7%) over an hour at 9pm.

After ITV1’s Gordon Brown and David Cameron interviews, it was Lib Dem leader Nick Clegg’s turn later on Sunday night. But the man who may be crucial if the May election results in a hung Parliament failed to excite viewers, with a touch over 1m (6.3%) tuning in to an interview with Mary Nightingale.