Step into the world’s largest collection of working historic computers! Located in the legendary Block H at Bletchley Park

**WHEN VISITING DURING THIS HEATWAVE, PLEASE BRING YOUR OWN REFILLABLE WATER BOTTLE WITH YOU. OUR SUPPLIERS ARE STRUGGLING TO SUPPLY BOTTLED WATER AT THIS TIME SO WE ARE UNABLE TO GUARANTEE THAT STOCKS WILL BE AVAILABLE IN OUR CAFE. Other cold drinks are still available for purchase.**

Step into the world’s largest collection of working historic computers! Located in the legendary Block H at Bletchley Park, TNMOC offers a journey through the ultra-secret pioneering efforts of the 1940s to the rise of personal computing and beyond.

Why Visit TNMOC’s Block H?

Recognized as one of England’s Top 100 ‘Irreplaceable Places’, we offer a hands-on experience that brings technology to life:

World-Class Working Collection: Witness iconic, functional machines like Colossus (the world’s first electronic computer), WITCH, and the Turing-Welchman Bombe.

Expert Demonstrations: Our team of experts and volunteers will be on hand to show you the Enigma and Lorenz machines in action.

Interactive Learning: Follow the evolution from 1950s mainframes to the 1980s home computing revolution through hands-on engagement.

Inspiring Atmosphere: Feel the pulse of innovation in the very place where modern computing was born.

Free Digital & Paper-Based Trails: Embark on a family adventure with interactive trails that guide you through our galleries, offering puzzles for the kids and deeper tech insights for the adults.

Plan Your Visit

Duration: We recommend a minimum of two hours to explore the full collection.

Entry: Your ticket allows entry all day. Doors open at 10:30 AM.

Location: The National Museum of Computing, Bletchley Park, MK3 6DS.

View the refurbished facilities through our online your- https://www.tnmoc.org/3d-virtual-tour-2026https://www.tnmoc.org/3d-virtual-tour-2026

Important Information

Cancellation Policy:

Refunds: Available up to 48 hours prior to your visit.

Transfers: We are happy to transfer your tickets to a different date at any point up to the day of the event.

Please note: We cannot issue refunds for no-shows.

Ticket Delivery: If you do not see your tickets in your inbox, please check your Spam folder. If they are still missing but your payment was successful, don't worry! Our front desk will have your name on the guest list—simply show up on your booked date.

Support Our Mission

We are a charity dedicated to the mission to 'Conserve, Educate, Engage, & Inspire'.

Donate: Click here to support our mission

Alternatively, you might like to:

Become a Museum Supporter

Visit our Online Shop

Volunteer With Us

Upgrade Your Visit: Become an Annual Ticket Holder!

Don’t just visit once—become a part of the story. For only an additional £10, you can upgrade your Day Ticket to an Annual Pass.

Why upgrade?

Unlimited Entry: Return as many times as you like for a full 12 months.

Best Value: The pass pays for itself in just two visits.

Support History: As a charity, your upgrade directly funds the conservation of these "Irreplaceable Places."

Stay Connected: Get first look at our changing exhibits and special guest speaker series.

To secure your year-long access, simply select the "Annual Ticket" option at checkout.

EXPLORE EVENTS

Our calendar is packed with fascinating workshops, expert-led talks, and immersive themed days that dive even deeper into the digital revolution. To make sure you don't miss out on what’s coming next, be sure to visit our events page on the website, where you can explore all our upcoming scheduled activities and secure your spot for our next big event.

Can't wait until you arrive at Block H? Take a digital stroll through our galleries right now! If you want a sneak peek of our world-class collection, dive into our 360-degree online tour. It’s the perfect way to explore the massive scale of the Colossus or get a close-up look at the WITCH from any angle, giving you a taste of the incredible history waiting for you in person.

Stay connected: with the latest updates, behind-the-scenes footage, and "on this day" tech history by following our journey online. Join our growing community of enthusiasts and tech historians to be the first to know about new exhibits and special announcements. Follow us across our social media channels:

X (formerly Twitter): @TNMOC

Facebook: The National Museum of Computing

Instagram: @tnmoc

LinkedIn: The National Museum of Computing

YouTube: TNMOC Official Channel

Description supplied by the event organiser.