Richard Ayoade returns with Celebrity Crystal Maze, Andrew Marr looks at changes in Britain under Queen Elizabeth II, Alistair Sim is the focus of Comedy Legends, and it's au revoir to Riviera and LA’s Finest . . .

Pick of the Day

Celebrity Crystal Maze, 10.00pm, Channel 4

Richard Ayoade returns to guide more celebrity adventurers on an epic quest through the four fantastical zones of The Crystal Maze.

Within the zones, the teams face a host of Skill, Physical, Mystery and Mental challenges in a bid to win precious crystals, which they will exchange for time in the legendary Crystal Dome.

This time, TV presenter Laura Whitmore captains her team - comedian Chris Ramsey, dancers Perri Kiely and Jordan Banjo, and former rugby player Gareth Thomas - through the maze.

The whole season will be available to stream or download on All 4 following the transmission of the first episode.

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Don't Miss

Comedy Legends, 9.00pm, Sky Arts & NOW TV

Perhaps best known for his portrayal of the title character in Scrooge (A Christmas Carol), Alistair Sim was one of the top British stars of the 1950s.

While he began his career on stage, the peak of his on-screen career was littered with memorable comical roles in films such as The Happiest Days of Your Life, Laughter in Paradise, Alfred Hitchcock’s Stage Fright and the farcical The Belles of St Trinian’s. The Green Man is a personal favourite.

While he was also known for more serious roles and would eventually return to the stage for Shakespearean roles, Barry Cryer examines Sim’s work as a comic actor and why he should be remembered as a comedy legend.

Taskmaster, 9.00pm, Channel 4

With just three episodes left in this really fun show, Daisy May Cooper holds the lead in the race to win Taskmaster Greg Davies' much-admired golden head.

Greg's trusty assistant Alex Horne gets an acting role as he tries to ignore Richard Herring hiding menacingly in a bush.

Plus: Katherine Parkinson pays a visit to the fridge, Mawaan Rizwan nicks a cup of tea and Johnny Vegas takes a tumble.

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High Society, 8.00pm, BBC Four

The Beeb’s Thursday night dip into classic movies returns to the musical genre with this remake of The Philadelphia Story, with added Cole Porter tunes.

Time is short if playboy CK Dexter-Haven (Big Crosby) is to reclaim his former wife (Grace Kelly) before she remarries. Cynical reporter Mike Connor (Frank Sinatra) is covering the wedding.

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New or Returning Shows

New Elizabethans with Andrew Marr, 9.00pm, BBC Two

Andrew Marr (above) examines the way Britain went from a rigid, deferential, hierarchical, patriarchal and class-obsessed society in the 1950s toward a more liberal, inclusive, egalitarian society in the latter part of the QEII reign.

It’s the story of the permissive society, of changing attitudes toward homosexuality, sexuality, gender and race, of a breaking down of class barriers and the growing equality won by women in the workplace.

But it isn’t an unfettered story of positivity and progress, and this programme takes in both sides of that debate.

Sky Arts Late, 10.00pm, Sky Arts & NOW TV

Tim Marlow returns with the monthly magazine show highlighting the best in art, culture and performance while inviting a panel of guests to discuss the current events affecting the cultural sector today in the UK.

New to Stream

Break, Netflix

After a serious accident, Lucie tries to rediscover herself as a dancer and meets Vincent, a talented b-boy battling his own insecurities.

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Chico Bon Bon and the Very Berry Holiday, Netflix 

The Fix-It Force makes a plan to hit every home as fast as they can, delivering Blunderberry Cakes before the town awakes to avoid a holiday disaster.

Ending Today

Riviera, 9.00pm, Sky Atlantic & NOW TV

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Season three of the soapy drama concludes with a race against time for Georgina and Gabriel as they head to Cirisium as Alex begins to trial her deadly drug.

Can they stop her in time and save countless innocents lives as the scorching series reaches its climax?

LA’s Finest, 9.00pm, FOX

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Recently cancelled in the US, so this season two finale is the last-ever episode of a pretty so-so cop show starring Jessica Alba and Gabrielle Union.

This time around, the detectives work as a united force to put an end to Lustrum Holdings and restore peace in Koreatown.

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