But instead of a winged, walnut-sized ball, real-life seekers chase a flag runner dressed in yellow, who has a sock with a tennis ball inside attached to their shorts.
After the Allies' final victory, it took Mrs Webb several months to organise return passage to the UK, where she worked as a secretary at a school in Shropshire.The head teacher there had also worked at Bletchley so knew of her professionalism, whereas other would-be employers, she recalled, were left stumped by her being unable to explain - due to secrecy requirements - her previous duties.
More than half a century later, in 2021, Mrs Webb was one of 6,000 British citizens to receive the Légion d'Honneur, following a decision by President François Hollande in 2014 to recognise British veterans who helped liberate France.In 2023, she and her niece were among 2,200 people from 203 countries invited to Westminster Abbey to see King Charles III's coronation.The same year she celebrated her 100th birthday at Bletchley Park with a party.
She and her guests were treated to a fly-past by a Lancaster bomber. She said at the time: "It was for me - it's unbelievable isn't it? Little me."The Israeli firm behind the Pegasus spyware has been ordered to pay WhatsApp $167m (£125m) for hacking 1,400 people in 2019.
Pegasus is malicious software which can be installed remotely on mobile phones to access, among other things, people's microphones and cameras.
NSO Group, which sells the tech, has been accused of enabling authoritarian regimes to monitor journalists, activists and even political figures."It is lovely. I just loved it from the beginning, but of course I didn't know that every other publisher in the world had already turned it down. So it was lucky that she found me and I was lucky that I found her. I mean, that's extraordinary, isn't it?"
In 2000, Mr Cunningham started his own "lively and creative" publishing company, Chicken House, which has a special emphasis on original children's fiction books.He remains passionate about discovering new writing talent, but said he would never tire of being known as the man who brought Harry Potter to the world.
The winners at the ceremony in London were voted for by thousands of members of the #BookTok community on the video-sharing app.Book lovers use the platform to make recommendations, and share their thoughts and opinions on trending books.