
How 18 Clues Works
You go to our Challenge Shop and purchase one or more of our 18 Clues Challenges. You can choose a Walking Challenge, which requires you to visit the location and find the clues in person, and/or a Virtual ('Armchair') Challenge, which you can complete online, anywhere you choose, using tools such as what3words, Google Maps and your preferred search engine. Solve all 18 clues correctly and you will be left with the correct solution to the Challenge, which you can then submit online to be entered into an amazing prize draw. Scroll down to see our current prize package.
A new pair of Challenges featuring a new location will be released each month. All clues, facts and solutions in the Walking and Virtual Challenge versions are different, so if you are able to visit the Challenge location you can complete both Challenge versions to double your chances of winning the prize. As you explore the location, be it physically or virtually, you will also learn loads of interesting facts.
Best of alll, 18 Clues proudly supports animal and environmental charities in the UK and overseas. As our business grows, so does the number of charities we donate to each quarter.
Walking Challenge
Virtual Challenge


Current Prize Package
See below for details of our current prize package. To be entered into the prize draw, correct entries must be submitted by midnight, 31st August. The draw will take place within days of this date and the winner notified soon afterwards. Subsequent draws will take place quarterly. The next, exciting prize package will be announced in August, as this one draws to a close. Remember... you've got to Be In To Win!
The Perfect Gift Anytime
Give the gift of adventure with an 18 Clues Gift Voucher!
Gift Vouchers start at £10 and you can choose to have them emailed to yourself to print out and present in person, or emailed directly to the recipient on a date that you pre-schedule.
A £10 gift Voucher will buy the lucky recipient one Walking Challenge activity to enjoy with friends or a Virtual Challenge to play at home, plus a 25% discount on a second Challenge.
If you choose to have the gift voucher emailed to yourself, you can buy Stylish Presentation Sleeves from our Challenge Shop for just £2, including postal charges. You then simply insert the voucher you have purchased and present to your friends or loved ones.
A GIFT FOR YOU... Buy a minimum of £30 worth of Gift Vouchers in one order and within 24 hours you'll receive a code enabling you to order a complimentary Challenge of your choice.
IMPORTANT: If you are buying a Challenge for others, always buy a gift voucher. Why? Whenever you purchase a Challenge through the Challenge Shop, a Unique Reference Number (URN) is generated that is specifically linked to you and your contact details, so only you will be able to request answers to clues or submit the final answer. If, however, you buy someone a gift voucher, they can choose whichever Challenge(s) they wish, and when they redeem their voucher they will be registered as a member in their own right.
To buy an 18 Clues gift voucher click the Gift Voucher image above, the Header at the top of the page, or here.

Latest Challenge Release
Known worldwide for its famous university and quintessential English charm, Cambridge is like a living storybook where every corner hides a surprise. Imagine ancient colleges with secret courtyards, quirky hidden gems, and punts gliding along the River Cam. The city is small enough to wander around on foot or bike, yet packed with magnificent architecture, world-class museums, quirky bars, buzzing cafés, and green spaces perfect for relaxing picnics. Exploring Cambridge is an absolute treat!
The Challenge... College life in Cambridge is steeped in tradition… and mischief! Student pranks have become legendary, from a van hoisted onto the Senate House roof to King Henry VIII's statue at King's College being interfered with, and many other daring escapades. There are whispers that plans are afoot for an even riskier prank. Identify the ring‑leader and the target college before someone gets hurt.
About this Challenge... For more information specific to this particular Challenge location, please see 'ABOUT THIS CHALLENGE', at the base of the specific Product Page in the Challenges Shop. Choose the Walking Challenge, the Virtual Challenge, or if you leve near the Challenge location or plan to visit Cambridge, buy both to double your experience, double your knowledge and double your chances of winning the prize package!
The Charity... 18 Clues proudly supports animal and environmental charities at home and abroad. Each time we add a new set of Challenges to our portfolio, we select an additional inspirational charity to donate to on a quarterly basis. In this instance we chose to add Save Me Trust to our list of charities. Save Me was set up to proactively protect the welfare and dignity of wild animals through campaigning, lobbying and changing laws, giving wild animals a voice. Founded by long time animal welfare campaigner Sir Brian May (yes, the legendary Queen guitarist), and multi award-winning conservationist Anne Brummer, it specialises in collaborating with experts to find sustainable solutions based on science and common sense. To find out more about this incredible charity, click on the grey 'Challenge Charity' box above right, or here.
To start exploring this or any of our previous Challenge locations, please click the button below to access the Challenge Shop:








