Natural World: Unnatural History Of London - BBC2, 8pm
Urban foxes, pigeons and mice are some of the wildlife spotted every day in London, but there are a surprising number of secret inhabitants in the capital's streets that we don't often get to see.
This programme explores the unusual wildlife found in London and the people who hunt it out, from Billingsgate fish porters and Indian chefs, to Crayfish Bob, who scours London's canals for foreign species.
The Walton Sextuplets: Moving On - ITV1, 8pm
In 1983, a Liverpudlian woman gave birth to six girls and the media went into a frenzy. Parents Janet and Graham Walton let the TV cameras chart their girls’ upbringing and tonight we catch up with the sextet on the eve of their 28th birthday.
The girls' lives were documented on film until they reached the age of 18, and in this episode they are seen watching old footage of themselves and discussing the memories it evokes. Expect lots of cute baby photos.
True Love - BBC1, 10.35pm
It's Ashley Walter's turn to experience the vicissitudes of modern romance in tonight's True Love, the second of five 30-minute vignettes.
Last night it was David Tennant's Nick fighting the temptations of nostalgic companionship with the appearance of an old flame. Tonight it's Walter who has to weigh up his domestic responsibilities - a bored wife (Lacey Turner) and crying baby - with the lure of a pretty face and inviting smile from a stranger at the bus-stop. The adulterous Nick emerged just about intact last night, so surely Walter's Paul must get his comeuppance, if only to balance the ledger.