Sherlock Holmes and this Missing Blueprint

Basingstoke and Deane

Type:Museums

Milestone Museum, Basingstoke Leisure Park, Churchill Way West ​​​​​​, Basingstoke, Hampshire, RG22 6PG

Tel: 01256 639550

Sherlock Holmes mystery trail at Milestones Museum

About

Head to Milestones Museum in Basingstoke this May half term for the top secret clue solving, mystery and secrets.

Sherlock Holmes returns to Milestones for a brand new case when a top secret submarine design is stolen from Thornycroft Engineering Works.

In the late 19th century, new naval technology and industrial innovation were closely guarded secrets. The loss of a single set of plans could shift the balance of power between nations. 

Fearing espionage Sherlock Holmes is asked to help and he is looking for some counterparts to help him too!

Become a detective this May half term and solve clues and crack codes, track suspects and follow leads, search for hidden evidence with eight locations to visit and gather the evidence. Remember not everyone you meet can be trusted. 

Book Tickets

Guide Prices

Adults £19.50
Child (5 - 15 years) £13.50
Concession - £18.50
Under 5s - FREE
Family Ticket (up to 5 people, max 2 adults) - £64.00

TripAdvisor

Map & Directions

Opening Times

Sherlock Holmes and the Missing Thornycroft Blueprint (23 May 2026 - 31 May 2026)

* Activity included in admission ticket

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Milestones MuseumMilestones Museum, Basingstoke and DeaneFrom cobbled streets to a seaside pier, teddy bears, vintage vehicles, an operating pub, sweet shop and more, there is so much for everyone to see, do and enjoy at Milestones, Hampshire’s museum of living history!