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Si5 Spy Missions

Chelmsford, United Kingdom•4.4(46)•Escape Room

Complete thrilling spy missions by solving puzzles, climbing through tunnels and dodging lasers to stop Agent Malice in this interactive indoor adventure.

Si5 Spy Missions offers an incredible spy adventure experience for families and children aged 4-18. Visitors are tasked with boarding a stolen ship called the Steadfast and stopping the villainous Agent Malice from launching her missiles. The missions involve climbing through tunnels, dodging lasers, and solving puzzles while being guided by Agent Blue. The difficulty of each mission can be adjusted according to the age and ability of participants, making it suitable for both younger children and teenagers. The venue operates 9 centres across the country and caters to various groups including birthday parties, families, school trips, and corporate events. For parties, the experience is themed around a Battle Cruiser, where birthday teams race to stop Agent Malice's evil plans. The puzzles are cleverly designed so solutions cannot be memorised, encouraging repeat visits with children enjoying it every time. All missions take place indoors, making it an ideal activity for any weather. The venue includes a bright, friendly café serving cooked food, and party groups receive a peaceful hour while their children enjoy the adventure before returning to a set-up table with drinks, food, and spy packs. SpyMissions also offers team building experiences for corporate groups of up to 40 people, combining physical challenges with engaging storytelling and puzzles that require teamwork to complete.
OFFICIAL WEBSITE

Opening Hours

Monday: Closed
Tuesday: Closed
Wednesday: Closed
Thursday: 16:00 – 19:00
Friday: 16:00 – 19:00
Saturday: 10:00 – 19:00
Sunday: 10:00 – 18:00

Venue Details

Venue Type

Indoor

Typical visit duration

1-3 hours

Booking

Book in advance

Recommended ages

4 years – 18 years

What this place offers

ToiletsToilets
Public transportPublic transport nearby
Accessible toilets
Free WiFi
Baby changingBaby changing facilities
Food available
On-site parking
🐕Dog-friendly
Parking nearby
Pushchair friendlyPushchair friendly

☕ Food & Drink

Café

On-site café serving freshly cooked hot food and drinks for parties, with a party food menu available

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Google Reviews

4.4(46 reviews)
Z
Zoe Alexandria

Zoe Alexandria

5 months ago

I had my son’s 10th birthday party here, and from the moment I’d booked the party all I felt I had to do was turn up and enjoy the experience. The kids were really excited about it, but their high expectations were totally exceeded. The staff (especially our host Becky) were so warm and high energy from the moment the kids arrived, until the moment we left. They were looked after and had fun the whole time, and encouraged to work as a team during the whole game so no child felt left out. The kids came out buzzing and couldn’t stop talking about it, we will definitely be back again. Thank you!

B
Bianca May

Bianca May

6 months ago

AVOID AT ALL COSTS!!! What an awful company to deal with. My son had a part in January, booked and paid for in full in OCTOBER! i paid £16 per child and booked for a group of 11, unfortunately 3 children couldn't make it so i cancelled and as per their policy if you cancel within 7 days of the party they refund for those children. my calculation this should have been £48 took several emails and numerous excuses telling me their payment system had issues etc etc ect what a load of rubbish. As soon as i emailed this morning threatening with a 1 star review they refund me in minutes! I thought thank goodness this headache is over, but to my surprise the refund amount was wrong! only £36, this is the price for a NOW party NOT what i paid for back in October! I wait for my further refund of £12, which if i haven't received by the end of play today i will open a dispute with my credit card company. The place was dirty and cold!!!

T
Tamsin McGarry

Tamsin McGarry

6 months ago

Avoid! Place is dirty, poorly maintained and staff are overwhelmed. The guy leading our group was trying his best but wasn't the right person to be doing that role. He was complaining to his boss he'd not had his lunch when we started then as we came out of the last bit of the experience he clocked his boss, complained again about his lunch then just shot off without a bye or anything to us. All a bit strange but did make us laugh. We'd been polite going round so I don't think it was us...he just really wanted his lunch, and to be fair it was mid afternoon but management should ensure they have enough staff working to give them their breaks. The challenges were all pretty dull and didn't take a lot of working out. Some challenges were repetitive and went on for too long. My 12 and 8 year old really weren't impressed. The whole experience was quite entertaining and amusing but not for the right reasons, but we made the best of it. I would save your money and avoid.

H
H Springett

H Springett

10 months ago

Joint birthday party here today (Chelmsford) and 24 x very happy 8/9 year olds! Staff were fantastic and really helpful. Children had a great time - most never done an escape room before so novelty factor was high. Eating timings after the escape room is generous but we filled the time with cake, party bags etc. Recommended for parties.

W
WE R DJS

WE R DJS

3 years ago

Family fun mission that was thoroughly enjoyed by all! On arrival we was greeted with a pleasant smile and introduced to Sofie our mission rep, extremely impressed with her clear messages and assistance she provided to our children. Mission was completed in and number of rooms with different tasks. Would definitely recommend!

Reviews last updated: 29 September 2026

Events at Si5 Spy Missions

No upcoming events scheduled

Check back soon for new events at this venue.

This venue was last updated on 29 September 2026

Frequently asked questions about Si5 Spy Missions

Is Si5 Spy Missions free to visit?

Si5 Spy Missions is a paid attraction — see the official website for current ticket prices.

What ages is Si5 Spy Missions suitable for?

Si5 Spy Missions is best for children aged 4 and up.

Is Si5 Spy Missions dog-friendly?

Dogs are not permitted at Si5 Spy Missions.

Is there parking at Si5 Spy Missions?

Yes — Si5 Spy Missions has on-site parking, plus additional parking nearby.

Is there food at Si5 Spy Missions?

Yes — Café is on site at Si5 Spy Missions. On-site café serving freshly cooked hot food and drinks for parties, with a party food menu available

Is Si5 Spy Missions pushchair-friendly?

Yes, Si5 Spy Missions is pushchair, pram and buggy friendly — most areas are step-free so you can navigate easily with little ones in tow.

How long should we plan to spend at Si5 Spy Missions?

Plan 1–3 hours for a visit to Si5 Spy Missions.

How do I get to Si5 Spy Missions by public transport?

Si5 Spy Missions isn't on a major public transport route — driving is recommended.

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