Cuckoo (BBC One, 10.45pm)

Cuckoo (BBC One, 10.45pm)

IT'S been two and a half years since Cuckoo was recommissioned for two more series, and fans may have been wandering if it would ever land on our screens again.

Thankfully, the latest chapter of the popular sitcom is finally about to hatch tonight, and all the signs suggest it will be as good as ever.

For newcomers to Cuckoo, the series stars Taskmaster himself Greg Davies and Cold Feet's Helen Baxendale as married couple Ken and Lorna Thompson, the parents of Dylan (Tyger Drew-Honey) and Rachel (Esther Smith).

When the Bafta-nominated show started in 2012, it co-starred Andy Samberg as the titular 'cuckoo in the nest', but when he left to make Brooklyn Nine-Nine, it initially looked to be the end of the line for one of BBC Three's most successful sitcoms.

However, in stepped Twilight superstar Taylor Lautner to fill the Big-American-Name gap, playing Dale Jr, the son of Samberg's Dale Ashbrick.

In this series, we will see frustrated suburbanite Ken have a mid-life wobble as he struggles to settle back into his groove, post-paternity leave.

He's lost his power at work, and has seemingly been usurped by dastardly work rival, Jane (Jacqueline Boatswain).

During the next six episodes we will see if the patriarch can rediscover his mojo, for the sake of himself and his loveable family.

It all starts well tonight, as Ken is nominated for the prestigious Lichfield Lawyer of the Year award.

Unfortunately, Jane has been nominated too and he is convinced she is going to win.

Can Lorna think of a way to fix it so her husband comes out on top?

Meanwhile, Dale is still enjoying his adopted home town in Staffordshire and relationship bliss with Rachel, so contemplates taking the next step.

With Sid now in nursery, Dale needs to think of what he's going to do to support his own family.

However, Rachel is not ready to settle down. Still living with Lorna and Ken, tyrannised by her boss Nina (Juliet Cowan) and getting serious wanderlust, she wants to bust out of Lichfield and see the world.

As Dale gets more and more enthused about his new business, Rachel comes to the conclusion that she would actually rather he packed it all in.

Will our favourite couple get over this first relationship hump and figure out what their future should look like?

During the rest of this series, of which is being made available as a box set on BBC Three, Ken finds himself suspended from work and tries to engineer a way back in before Lorna finds out.

However, she is telling little white lies of her own and employs an underhand tactic to get Sid in to an exclusive local nursery.

Meanwhile, it's full steam ahead for Dale and Steve's new bar, but Rachel sees an opportunity to stop it from happening.

Later Ken complains about loud new neighbour Lloyd to the police, only to become close friends with him later.

There is also a pregnancy scare, the offer of dream job in Sierra Leone, a chance to meet Dylan's new (much older) girlfriend, and a very eventful launch night for the bar, All Steve's Pals.

It sounds like it could be all change for the clan during this fourth series of Cuckoo.

Some of the Thompson brood may decide to fly the nest, and feathers will fly, but with a fifth season on the horizon, this wildly offbeat but also comfortingly British sitcom is not ready to have its wings clipped just yet.

The Great Cheese Chase (BBC1, regions vary)

EVERY spring, thousands of people from all over the world converge on the Gloucestershire village of Brockworth. They come to watch and compete in one of rural England's craziest traditions: cheese rolling. This year, there's a new competitor lining up at the top of super-steep Cooper's Hill - Inside Out West presenter Seb Choudhury. He has signed up to take part in the terrifying race where 25 people throw themselves down the hill in pursuit of a wheel of Double Gloucester cheese. As he prepares to take part, he finds out more about the race, the cheese and the people who've battled to keep it true to its roots. Will Seb make it down in one piece and will he win the cheese?

Who Do You Think You Are? (BBC1, 9pm)

RADIO and TV presenter and former JLS singer Marvin Humes delves into both his Jamaican and English heritages and finds exceptional stories on both sides of the family. Deep in the Jamaican countryside, Marvin's discoveries about the lives of his black ancestors during the time of slavery turn his expectations upside down, while back in England he follows the trail of his great-grandfather, who overcame a traumatic childhood to play a part in one of the most dramatic events of the Second World War.

Tower Block Kids (C5, 9pm)

PART one of two. Documentary following children growing up in high-rise flats, who explain what it is like for youngsters growing up in tower block communities. Jordan has her first GCSE looming, but sharing a bedroom with younger sister Lexie is not ideal when she needs to revise, while their brothers Harley and Kyron do not get much quiet either, as antisocial behaviour on the estate keeps them awake at night. Siblings Blake and Drew are both animal-mad, but the lack of a garden in their tower block home means that they have had to get creative with their choice of pets.

Saving Poundstretcher (C4, 9pm)

NEW series. Documentary following Poundworld founder Chris Edwards after he was brought in by Aziz Tayub and his three sons to try to revive the fortunes of their Poundstretcher chain of discount stores. Chris teams up with middle son Shehzad to streamline the range of products being bought, but this puts him in immediate conflict with Aziz, who buys a huge variety of unusual and niche products. Chris also visits a Poundstretcher in Bolton, where he finds manager Tracey will do anything to keep her store open.

Made in Chelsea: Croatia (E4, 9pm)

LONDON may have been sweltering for much of the summer so far, but the Chelsea set are still going elsewhere in search of sunshine as they spend the season on Hvar Island in Croatia. But even in a new setting, some old problems resurface as Olivia wants to make amends with Sam following their dramatic fall out, but is either of them ready to make the first move? Meanwhile, Jamie wonders why Miles is being so flirty with his girlfriend Ell and Habbs' blossoming relationship is threatened by a secret.