HIGHLIGHT: Hidden Wales: Last chance to save Will Millard explores some of Wales’s forgotten buildings. He meets the Revd Robert Stivey, a Congregationalist minister, who has bought 12 derelict chapels with a view to reopening them as places of worship. Tuesday 8pm, BBC4

TELEVISION: Sunday 1.15pm (BBC1) Songs of Praise Katherine Jenkins and James Lusted visit Wales to celebrate St David’s Day.

9pm (BBC2) Chris Packham: The walk that made me The naturalist walks from Southampton to Winchester Cathedral, and offers thoughts on mental health which may help others (repeat).

Wednesday (BBC4) Writing with Fire: Storyville A group of Dalit women started India’s first women-only newspaper in 2002.

RADIO: Friday 7.30pm (R3) Radio 3 in Concert The BBC Singers present Renaissance choral polyphony and contemporary responses to it, live from Keble College, Oxford.

Sunday 8.10am (R4) Sunday Worship A service for St David’s Day from St Illtud’s, in Llantwit Major, where the medieval saint offered a radical hospitality.

10.30am (World Service) Heart and Soul: The right thing How Pav Gill, a Sikh lawyer living in Singapore, blew the whistle on wrongdoing in the Wirecard financial empire (3/3).

3pm (R3) Choral Evensong A repeat of this week’s service from Bath Abbey.

Wednesday 4pm (R3) Choral Evensong Live from Lincoln Cathedral on Ash Wednesday.