The 5 best shows on TV tonight: Tuesday 9 March

The Great Celebrity Bake Off is back this evening with a stellar cast including Alexandra Burke and Daisy Ridley.

It's not the only starry spin-off though as The Celebrity Circle also kicks off. Will the famous contestants be able to tell who among them is genuine and who's catfishing as one of their showbiz peers?

Unforgotten also picks up on episode three after being moved from Monday's schedule to Tuesday.

Read more: Bafta Film nominations announced

Cassie and Sunny have their suspects, but it doesn't look like anyone's willing to start talking.

The Great Celebrity Bake Off - 8pm - Channel 4

Daisy Ridley, Alexandra Burke, Tom Allen and Rob Beckett are the first stars stepping into the tent for latest series of the Celebrity Bake Off specials for Stand Up To Cancer.

They'll have to try and bake their way into Prue Leith and Paul Hollywood's good books to be named the Star Baker of the episode.

Matt Lucas returns to host solo while his co-presenter Noel Fielding is on paternity leave.

Unforgotten - 9pm - ITV

The ITV drama was usurped from its usual Monday time slot by Oprah's interview with Meghan Markle and Prince Harry but it returns for the third episode of the series tonight.

Read more: Oprah's Meghan and Harry interview draws impressive UK ratings

The close of episode two saw all suspects in the case learn that Matthew Walsh had been found and identified - but they will all deny knowing the victim when questioned by DCI Cassie Stuart (Nicola Walker) and DI Sunny Khan (Sanjeev Bhaskar).

Elsewhere, the rest of the Walsh's body is discovered.

Your Honor - 9pm - Sky Atlantic

The gripping drama starring Bryan Cranston as a New Orleans high court judge desperate to protect his son continues on Sky Atlantic tonight.

Following on from the first episode that saw Michael's (Cranston) son Adam (Hunter Doohan) accidentally kill a mob boss' son, the pair try and come up with an alibi for the day of the incident.

Caroline Aherne at the BBC - 9pm - BBC One

John Thompson looks back at the incredible career of the late, great Caroline Aherne, who died in 2016.

Read more: Alex Beresford reacts after Piers Morgan's GMB walk-off

The actor and comedian takes us through a selection of clips and characters, including early routines from Aherne's time on the stand-up circuit as well as Mrs Merton and the beloved Royle Family.

The Celebrity Circle - 9.15pm - Channel 4

Social media-based game show The Circle's celebrity spin-off starts tonight with a cast including Denise van Outen, Lady Leshurr and Duncan James.

The stars are able to compete as themselves or they can masquerade as another famous face, so while the likes of YouTuber Saffron Barker play it straight, there are some like Loose Women Kaye Adams and Nadia Sawalha who have to convincingly be someone else - in their case it's Gemma Collins.

Like Celebrity Bake Off, the show is part of Channel 4's Stand Up To Cancer programming.

Watch: Denise van Outen and Eddie Boxshall try out laughter therapy