Alfred the frog looks almost as scary as the pumpkin he is perched on at London Zoo 26 October 2011. Keepers at the zoo have joined in the Halloween tradition by supplying pumpkin lunches to some of their animals, including the giant waxy monkey frog. However Alfred is not quite the giant figure his species name suggests – he actually measures up at around 4 inches (10 centimeters). (Photo by EPA/Zoological Society of London)

An employee at Christie's auction house examines a complete sub-fossilised elephant bird egg on March 27, 2013 in London, England. The elephant bird egg is expected to fetch 30,000 GBP when it features in Christie's “Travel, Science and Natural History” sale, which is to be held on April 24, 2013 in London. (Photo by Oli Scarff)

A black golden shaded British Shorthair cat is admired by visitors as he is carried at the Cat Extravaganza event at Olympia in London, Sunday, February 18, 2024. Loving Cats Worldwide brought its Cat Extravaganza and Rescue Awareness Event to London, where visitors could learn all about this intelligent species by observing the show's five judging rings. Plus, meet with local rescues and charities, as well as hear educational anecdotes about different cat breeds. (Photo by Kirsty Wigglesworth/AP Photo)

Prince William exchanges rings with his bride Catherine Middleton in front of the Archbishop of Canterbury Rowan Williams inside Westminster Abbey on April 29, 2011 in London, England. The marriage of Prince William, the second in line to the British throne, to Catherine Middleton is being held in London today. The marriage of the second in line to the British throne is to be led by the Archbishop of Canterbury and will be attended by 1900 guests, including foreign Royal family members and heads of state. Thousands of well-wishers from around the world have also flocked to London to witness the spectacle and pageantry of the Royal Wedding. (Photo by Dominic Lipinski - WPA Pool/Getty Images)

Passengers wear no trousers as they ride the London Underground in London, Britain, 07 January 2018. The No Pants Subway Ride is an global annual event where people take the public transport while they are not wearing trousers to surprise other passengers. This event takes place on the first Sunday of every year in the world's major cities. (Photo by Tolga Akmen/EPA/EFE/Rex Features/Shutterstock)

Boozed up revellers dressed up in fluorescent colours during the opening day of the 2019 Notting Hill Carnival on August 25, 2019 in London, England. Up to a million people are expected to pack the streets of Notting Hill and surrounding areas over the course of the two day event. The annual celebration of Afro-Caribbean culture takes place each August bank holiday weekend. (Photo by London News Pictures)

A woman takes part in a protest at Parliament Square, following the kidnap and murder of Sarah Everard, in London, Britain March 15, 2021. Everard, 33, was abducted as she walked home in south London on March 3 and a police officer has been charged with her kidnap and murder, provoking a national debate over how British society deals with male violence against women. (Photo by Henry Nicholls/Reuters)

Chloe Ferry attends the Geordie Shore series 15 “Shag Pad on Tour” cast launch at Tower Bridge on August 16, 2017 in London, England. (Photo by Karwai Tang/WireImage)