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Looking out through the open end of the barn to the fields at the bottom of Brill Hill

Private coaching gymOakcroft Farm, Boarstall

If you used to be fit & life took over, this one’s for you.

A coach-led small group gym in a converted barn at the bottom of Brill Hill. A proper plan, real coaching, and a community that actually knows you.

Book a call Join the 20

Founding memberships are open

20 places · 10% off, locked for three years

IWelcome

Life took over.
Now let’s take it back.

A career, a family, a diary that never stops. It didn’t happen overnight. It slipped, week by week, until training became something you used to do. The fit version of you hasn’t gone anywhere.

What changes

Energy
By three o’clock you’re running on coffee and willpower.
You sleep better, skip the afternoon slump and still have something left when you get home.
Family
You watch the kids play more than you join in.
You’re down on the floor with the kids or grandkids, chasing, lifting, carrying, and fine the next morning.
Everyday life
Stairs, shopping bags and getting up off the floor feel harder than they should.
The everyday stuff feels normal again, because you’re stronger than it needs you to be.
The long run
Your back, knees or shoulders have started to have opinions.
Stronger muscles and bones, better balance and a fitter heart, so you keep moving well for decades.
Confidence
You keep saying you’ll get back into it when things calm down.
You’ve booked the race, the hike or the ski trip, and you’re looking forward to it.

This is for you if

  • You want to feel fitter, stronger and more like yourself
  • Work, family or both have taken over
  • You want a coach who knows you, not a key fob
  • You’re ready to commit to a couple of sessions a week

It’s not for you if

  • You want a cheap open gym to train alone
  • You’re after a quick fix before a holiday
  • You’re not ready to turn up consistently
“Whether it’s moving without pain, achieving something you never thought possible, or an hour to switch off, I want you to leave feeling better than when you arrived. And to build a stronger you for the decades to come.”
Coach JK

The barn · Oakcroft Farm

A converted barn at the bottom of Brill Hill.

Reclaimed grain-store timber on the walls, matte-black steels, BLKBOX kit in Oyster White and a big window looking straight out to the hill. There’s a kitchen, a seat by the window and private parking a short walk from the door.

The build is well under way. Founders get the first look inside at the December soft launch.

Render of the finished gym: timber walls, black steels, a sled track and the big window at the end
The vision · Render
The olive-green barn with its open end above a new red-brick base, ready for the window
The window end, before the glass goes in
Looking out through the open end of the barn to the fields and hills
The view the window will frame
Josh painting the new steels matte black
Painting the steels matte black
IITrusted

Don’t take my word for it.

6

Years coaching

Small group PT, bootcamps, mobile, online, and now the barn.

300+

People coached

Everyday people, from their first session back to personal bests.

600+

Run club members

30–40 of us running together every Wednesday.

“Josh helped me to build back up muscle strength and get back into a healthier, more active lifestyle.”
“I look forward to our weekly sessions and how strong they make me feel.”
RebeccaClient for 2+ years

Before

“Before I started working with him I would prioritise everything else over my running.”

Two years on

“JK’s commitment, belief in me and pep talks (there have been a lot!) have given me so much confidence to go out there and get PB’s in every distance.”
AnnaClient for 2 years
“He really listens and creates training programmes tailored to my objectives”
  • A sub-1:50 half marathon.
  • 1st and 2nd in HYROX Pro Solo.HYROX is a fitness race: 8km of running, with a workout station after every 1km.
  • Qualified for the HYROX World Championships.
KarenClient for 2 years
“He’s taken me from been scared of the gym and the kit to having a consistent and sustained healthy lifestyle!”
“What makes Josh very special is his focus on you, on what you want to achieve”
AlexClient for 3+ years
Josh smiling inside the barn at Oakcroft Farm, the fields behind him
Coach JK, inside the barn

Your coach

Hi, I’m Josh.

I’ve been coaching since 2020: small group PT, bootcamps, sessions in other people’s gyms, mobile and online coaching, and the JK Performance Run Club.

I built this place because I wanted a space where people feel safe, seen and heard. Somewhere you can work on yourself, surrounded by like-minded people who actually know your name.

  • Level 3 Personal Trainer (NASM)
  • UESCA Running Coach
  • PFCA Functional Fitness Coach

Coach JK

IIIHow to join

Your first step is a conversation.

  1. 1

    Book a call

    A relaxed 30-minute chat about your goals, your training history and how your weeks look.

  2. 2

    See if it fits

    If it’s a fit, I’ll recommend a membership. If not, I’ll say so. No hard sell.

  3. 3

    Your 1-2-1

    A tour of the barn, time with your coach and a movement assessment, so we know exactly where to start.

Two ways to train

Small group PT

Up to 4 people per session, one coach

Strength and technique, coached closely. Your own version of every session, built from your 1-2-1.

Classes

Up to 12 people per session, one coach

Functional fitness, conditioning and HYROX. Still coached, and a good sweat.

Three memberships

Train as often as your week allows.

Every membership includes your 1-2-1 start, quarterly progress reviews and the members’ community. Pick the one that fits how often you want to train, and we’ll talk it through on your call.

Founding members

Join the 20.

Our first 20 members get 10% off their membership, locked in for three years.

  • 10% off your membership, locked for three years
  • Book sessions 7 days before everyone else
  • First through the doors at the December soft launch
  • Founding member perks and a founding tee
Book a call

Rather message first?

WhatsApp 07713 126082

josh@jkperformancetraining.co.uk

The timetable

Early mornings, lunchtimes and evenings.

Built around a working week. You book through the app, with a set number of sessions each month.

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View the full timetable

Find the barn.

Postcards from the farm

Come and see the barn for yourself. I’ll show you round and we’ll work out where you’d start.

Coach JK

Find the barn

Oakcroft Farm

Boarstall, Bucks

Bottom of Brill Hill

Drive times

  • Brill & Oakley4 min
  • Horton-cum-Studley6 min
  • Fencott & Grendon Underwood10 min
  • Marsh Gibbon & Bicester12 min
  • Thame15 min
  • Oxford20 min

Private parking at the top of the farm, a 30-second walk to the door. For your satnav: HP18 9UY.

Get directions Open in Maps

Questions

Good to know.

Do I need to be fit to start?

No. Your 1-2-1 sets your starting point and every session is coached to where you are.

How much is membership?

We go through prices on your call, once we know which membership fits your goals and your week. Founding members get 10% off, locked in for three years.

When do you open?

We soft launch in December, with founders first through the doors, then full coaching starts in January. Founders hear the exact dates first.

Can I try it before I join?

There’ll be free taster sessions across the opening weekend. Founding places will likely be gone by then, which is why the call comes first.

Is there a minimum term?

Memberships have a 3-month minimum, so you give the training a fair chance to work. After that it’s a month’s notice to cancel.

What’s the difference between small group PT and classes?

Small group PT is up to four people with one coach, focused on strength and your own version of every session. Classes are up to twelve people: functional fitness, conditioning and HYROX to build your fitness.

What happens on the call?

A relaxed 30-minute chat about where you’re at and what you want. If it’s a fit, I’ll recommend a membership. If not, I’ll say so.

What do I bring to my first session?

Yourself, a water bottle and clean, flat trainers.

Wish you were here?

Book a call and come and see the barn for yourself.

Book a call