Drawers Off: The Big Naked Painting Challenge
5.30pm, Channel 4
“In the studio we’ve got paints and colourful markers. Behind the curtain, somebody’s starkers!” A software developer and a barber are among the amateur artists having a nude awakening in this life drawing competition. Every evening throughout the week, enthusiastic host Jenny Eclair gives the contestants a new model to put on canvas using their skills, imagination and flair. They then mark each other out of 10 and the winning artist walks away with a £1,000 prize. Hollie Richardson
Springwatch
8pm, BBC Two
Chris Packham and Michaela Strachan return to showcase the best of British wildlife. In tonight’s opener, Iolo Williams is having a gander at eagles and otters on the Isle of Mull, while Megan McCubbin visits Kielder Forest. Tomorrow: adders, owls and a lesser-spotted woodpecker. Ali Catterall
Britain’s Got Talent
8pm, ITV
In the first of the live semi-finals, which run through the week, the judges welcome back eight acts as well as golden buzzer performers Loren Allred, Axel Blake, Born to Perform, Keiichi Iwasaki and Flintz & T4ylor. The first finalist will be chosen via public vote and the second by the judges. HR
Silent Witness
9pm, BBC One
Halfway into the 25th-anniversary season, Nikki (Emilia Fox) examines the butchered body of a man after his bloodied wife walks into a police station with a knife in her hand. Amanda Burton continues to enjoy her return as a shifty Sam Ryan – with her intentions still unclear. HR
The Chris & Rosie Ramsey Show
9pm, BBC Two
It was only a matter of time before this smash hit of a podcast made its way to TV. The geordie comedy couple are joined by Craig Revel Horwood and his fiance, Jonathan Myring, for a poke around their relationship, listening to audience confessions and – hopefully – keeping the bickering short of a full-blown row. Alexi Duggins
The Time Traveler’s Wife
9pm, Sky Atlantic
Steven Moffat’s unstable emotional rollercoaster cranks back to the troubled youth of Claire (Rose Leslie), who is frustrated by her own linear experience of time. She recalls when she was the girl who waited (for Henry to visit) – and when her teen self wanted more. Jack Seale
