Available to hire for filming with flexible spaces and onsite support. 

Make the most of all we have to offer, experience multiple activities on the same day

Illuminated

Experience the thrill of Nuclear High Ropes at night! Open...

Rush

The ultimate weekend challenge! Conquer 6km of award-winning obstacles and...

Mud Tribe

Gather your tribe! Join the fun at Mud Tribe, a...

Training
Nuclear Fit – May 2026

Push your limits with Nuclear Fit, a unique outdoor fitness...

Secret Nuclear Bunker Tour

Discover a great value day out in Essex to the...

Weekly Fitness Classes

A range of outdoor fitness classes, led by qualified personal trainers. Train outdoors, build resilience with a supportive, like minded community. Suitable for all abilities & no experience required.

Ladies

Approx. 1 Hour

All abilities

Tuesdays 9:30am

Ladies Fitness Class A fun, empowering outdoor fitness class for ladies.

Build strength, boost confidence and improve your fitness in a supportive, motivating environment.
Your first class is completely FREE — simply use the code FREE at checkout.
This is your chance to try something new, challenge yourself, and surprise yourself with what you’re capable of. No pressure, no judgement, just fresh air, great energy and expert coaching

What's Included

£12.50 Per Class

(Price Includes Booking Fee)

Obstacle Fit Bootcamp

Approx. 1 Hour

All abilities

SATURDAYS 8:30am

obstacle bootcamp Join our obstacle bootcamp fitness class– no experience needed and everyone is welcome.
Your first class is FREE – just use code FREE at checkout!
Get fit, have fun and challenge yourself, no two classes are ever the same. Train outdoors, push your limits, and join a supportive community that will motivate you every step of the way.

What's Included

£12.50 Per Class

(Price Includes Booking Fee)

OCR Racers

Approx. 1 Hour

Intermediate to hard

Sundays 9:00am

If you’re an experienced OCR racer, our intermediate to advanced outdoor fitness classes are the perfect way to build on your skills.
These sessions focus on speed over obstacles as well as overall fitness, helping you sharpen your abilities and get race-ready for any OCR races.
Test yourself! The first Sunday of every month features our time trials, a chance to measure your progress and push your limits.

What's Included

£12.50 Per Class

(Price Includes Booking Fee)

Bespoke 1-2-1 or small group training

Bespoke times and dates

Bespoke times and dates

Looking for 1-2-1 training or have a small group that would like to train together? If so, we can tailor your session to your needs.

From those just getting to grips with obstacles and outdoor fitness classes through to experienced OCR Racers, we can create a bespoke class to suit your requirements.

Email wildforest@nuclearessex.com to book.

What's Included
Price On Enquiry

Nuclear Wild Forest

Parsonage Farm, Kelvedon Hatch,
Brentwood Essex, CM15 0LA

wildforest@nuclearessex.com

07970 739037

Features

FRee car parking

Hot indoor washdowns

Changing rooms and toilets

heated party rooms

fire pits

Vending machine

Nuclear Offers

TOP 10 FAQ's

Can I buy gift vouchers for friends and family?
Yes — gift vouchers are available to buy online and make the perfect present for adventure lovers.
How can I raise money for a charity?
Sign up to one of our races, create your own bespoke event, or design a Wild Forest mud run — then share your fundraising page with your community.
Are spectators allowed out on the course?
At Nuclear Wild Forest, group bookings may bring a maximum of two spectators onto the course. This helps us ensure safety, keep the event running smoothly, and give participants the best possible experience.
What training do the Instructors have?
The lead instructors are all: Level 2 Gym Instructors or Personal Trainers Level 3 First Aid at Work Swim Safety Water Safety trained DBS checked Introduction to Safeguarding Gen Potential Training
What facilities are available at Nuclear Wild Forest?
The main building houses toilets, a disabled toilet, hot indoor wash-down facilities, and changing rooms. There are tea and coffee facilities, and a vending machine available. Party rooms and grass areas with a fire pit are available to hire after your activity.
Do you charge a parking fee?
Parking is free at all sites and events, apart from Nuclear Mud Tribe, which has a £5 parking fee per car. All parking is within a short walking distance.
How can I buy the Nuclear Merch?
You can buy this online or on the day. The Nuclear Essex shop will be on site at each event for you to purchase kit by cash or card.
Do children need to be able to swim?
Swimming is not required, buoyancy aids are available on race day. At Wild Forest, everyone is fitted with a buoyancy aid when they enter the lake zone.
What should I wear?
Wear fast-drying, breathable clothing and trail trainers with good grip. Avoid cotton and footwear without traction.
Do you supply food?
There are no catering facilities onsite. We recommend either bringing your own food or ordering Pizza to be delivered via Brentwood Dominoes. If you quote NUCLEAR they will give you up to 50% discount. The party organiser needs to make the order by phoning 01277 219999 the day before party.
zebedee wild forest rig tyre walk tyre under & over 3fddc270-8157-471c-b565-b44a6fffc51e (1) IMG_2123 IMG_2124 IMG_2125 IMG_2146
How to find Nuclear Wild Forest

How to find us

Find Nuclear Wild Forest at Parsonage Farm, Kelvedon Hatch, Brentwood Essex CM15 0LA .

Download the what3words app and navigate to shelf.slim.pulse. This will bring you directly to Wild Forest.

Nuclear Wild Forest

Parsonage Farm, Kelvedon Hatch,
Brentwood Essex, CM15 0LA