Train Like an athlete.

Discover your strength at Stack House Gym in Rayleigh & Westcliff.

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A Complete Training Environment

  • Close-up of a piece of gym equipment with a black label that reads 'Hammers Strength' in raised letters.

    Fully Equipped Gyms

    Elite equipment from industry-leading brands.

  • A woman in athletic clothing pushing a weighted sled in an indoor gym, with other fitness equipment and spectators in the background.

    Official HYROX Training Club

    Structured classes and performance-focused programming.

  • A woman with blonde hair, wearing a sports bra and shorts, is exercising with a weighted vest on her shoulders while walking on a treadmill in a gym. The gym has a black wall with a sign that reads 'STACK HOUSE' logo

    Women’s-Only Gym at Stack House Westcliff

    Dedicated training space built for confidence and progress.

  • Container of Chaos Crew Pump The Chaos extreme juice fruit dietary supplement on a glass shelf surrounded by other supplement containers in a store.

    Supplement Bar & Café

    Fuel your training with pre-, intra- and post-workout nutrition available on site, alongside coffee, tea, and meal prep options.

  • A woman in purple athletic wear posing confidently in a gym, with a dark wall and a logo behind her.

    Dedicated Posing Room at Stack House Rayleigh

    Private space for physique development and prep.

Train with purpose

Elite equipment. Structured programmes. Expert coaching.

Support from day one

Every new member receives a tailored induction and real guidance.

Start with confidence

Book a tour. See the space. Meet the team.

Ready to see it for yourself?

Book a free tour

Takes 15 minutes · Rayleigh or Westcliff · no pressure, no sales pitch

Choose Your Location
View Rayleigh

Stack House Gym Rayleigh

A fully equipped gym with expert support and a welcoming atmosphere.
View Westcliff

Stack House Gym Westcliff

Structured training, dedicated women’s gym, and a supportive community.

Get 25% Off
Your First Month

Save up to £13.25 on your first month at Stack House Rayleigh or Westcliff — whichever individual direct debit membership you choose.

Pop your details in and we'll send you your code instantly — screenshot it and bring it with you on your first visit.

No pressure and no hard sell — just a cheaper way to find out why our members stay.

Offer ends 31st July.

★ 4.8/5 on Google — rated by members across Rayleigh and Westcliff