This week's UK TV & radio

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Listings for BBC HD on Saturday, April 21 2018

02:55This Is BBC Two HD Highlights of programmes on BBC Two HD. [HD] [S] 
06:15David Attenborough's Natural... ...Curiosities. Stretched to the Limit: Sir David investigates creatures that have made the ordinary extraordinary. [HD] [AD,S] 
06:40Naomi's Nightmares of Nature CBBC. 6/10. Australia: Desert: Naomi Wilkinson's weird wildlife search takes her to the Australian outback for an emergency callout with a snake catcher and a scary scorpion sleepover. [HD] [S] 
07:10The Pets Factor CBBC. 1/10. Ziggy, Ruskin and Tops: James gets a visit from Ziggy, a very noisy lurcher with a poorly tail. Cat helps some heroic dogs to save lives. Plus Rory has an emergency with a cat. [HD] [S] 
07:30The Dengineers CBBC. Highlights Den: Mark and Lauren get the help of experts to design dream dens for children. The team look back at all the amazing dens built throughout the series. [HD] [S] 
08:00Absolute Genius: Monster Builds CBBC. 6/8. Under Attack: Dick and Dom learn about defensive engineering, including impregnable castles, concrete bunkers and efforts to protect Earth from asteroids. [HD] [S] 
08:30Beyond Bionic CBBC. 6/30. Hummingbird: Andy Torbet attempts to match the hovering skills of the hummingbird. Can he find the tech to help him hover in mid-air and extract nectar from a huge flower? [HD] [AD,S] 
09:00Robot Wars 1/6. Dara O Briain and Angela Scanlon present, with commentary by Jonathan Pearce. The teams are Donald Thump, Behemoth, Sabretooth, Apollo, Apocalypse and The Swarm. [HD] [S] 
10:00Snooker: World Championship Hazel Irvine introduces live coverage from the Crucible Theatre in Sheffield. Mark Selby begins the defence of the title as the climax to the snooker season gets underway. [HD] [S] 
12:00Wanted Down Under Series in which British families are given a look at life in Australia or New Zealand ahead of a possible move there. [HD] [S] 
12:30Trust Me, I'm a Doctor Michael Mosley and Dr Chris van Tulleken investigate omega-3 supplements, and Dr Zoe Williams discovers why eating a lot of fat affects men and women differently. [HD] [S] 
13:30Britain's Biggest Warship 1/3. Crewing Up: The behind-the-scenes story of what makes HMS Queen Elizabeth so unique and how her crew are working together to breathe life into Britain's biggest warship. [HD] [AD,S] 
14:30Top of the Shop with Tom Kerridge 1/8. Four food producers with fledgling businesses test their products in the heart of the Yorkshire Dales. This time makers of preserves, pickles and spreads battle it out. [HD] [AD,S] 
15:30Top of the Shop with Tom Kerridge 2/8. Four food producers with fledgling businesses test out their products. This time it is cheesemakers competing against each other for one place in the final. [HD] [AD,S] 
16:30Final Score All the day's football results, along with reports and reaction from the big games, including Watford v Crystal Palace and Bolton against Wolves. [HD] [S] 
17:15Money for Nothing 1/30. Junk makeover show. Sarah Moore rescues a granite worktop, a scientific microscope and some wire mesh from an old chicken coop at Altrincham Recycling Centre. [HD] [S] 
18:00Antiques Road Trip In Liverpool Natasha Raskin Sharp hopes for a big hit with a Sergeant Pepper style military jacket. Charles Hanson hopes to sail away with a profit on maritime-themed glass panels. [HD] [S] 
19:00Snooker: World Championship Jason Mohammad introduces live coverage from Sheffield, where defending champion Mark Selby hopes to secure his place in the second round. Session has a maximum of ten frames. [HD] [S] 
20:00The Forest Mark Bonnar narrates a series revealing the world of Galloway Forest. A six-tonne machine at James Jones sawmill requires a dedicated engineering team to fix it when it breaks. [HD] [S] 
20:30Dad's Army 7/7. The Recruit: Classic sitcom. Captain Mainwaring is temporarily in hospital. During his absence, Sergeant Wilson allows the vicar to join the platoon. [S] 
21:00imagine... Habaneros: You Say... ...You Want a Revolution? Part One. Film capturing the mood of Havana and its people, the Habaneros, at a pivotal moment. [HD] [S] 
22:05Testament of Youth Film First World War drama. In 1914, Vera Brittain decides to study at Oxford. She falls in love with her brother's friend, but then war is declared. Contains some upsetting scenes. [HD] [2014] [AD,S] 
00:05World Championship Snooker... ...Highlights. Jason Mohammad introduces highlights from Saturday evening's matches at the Crucible, as defending champion Mark Selby aims to book his place in the last 16. [HD] [S] 
00:55World Championship Snooker - Extra Highlights of the opening day's play are introduced from the Crucible Theatre in Sheffield. [HD] [S] 
02:55Civilisations 8/9. The Cult of Progress: Documentary. David Olusoga explores the artistic reaction to imperialism in the 19th century. [HD] [AD,S] 
03:55This Is BBC Two HD Highlights of programmes on BBC Two HD. [HD] [S]