
95.1kg to 81kg, and out of knee pain
Stacey lost 14.1kg between February and July, 95.1kg down to 81kg, and trained her way out of an everyday knee injury.
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Nathan Rudman coaches 1:1 at Active Performance, King’s Cliffe — a calmer setting serving Stamford, Oundle and Rutland. Ideal for beginners, over-40s and rehab-focused training.

Active Performance is the quieter of the two venues, and that is the point. It is a private, well-lit studio gym — Technogym cardio, plate-loaded and selectorised machines, cable stacks, dumbbells, medicine balls, a plyo box and open floor to work on — with a handful of people in it rather than a hundred. “Get Active. Improve Performance” is painted on the wall, and the room is run accordingly.
If a commercial gym floor feels like too much, or you would rather learn to squat without an audience, this is the session to book. Everything Nathan programmes at Definition can be run here; the room is calmer, not lighter.
King’s Cliffe brings in a different mix from Peterborough: people from Stamford, Oundle, Wansford, Nassington and the Rutland villages who would rather drive ten minutes to a quiet studio than twenty-five into the city.
A lot of them are returning to training after a long gap, working around a niggle, or starting from scratch and want that to happen somewhere unhurried. Runners use it for the strength half of a marathon block. What everyone gets is the same Assess, Build, Perform method, the same eyes on the bar, and the same standard.
100% natural. No steroids, no peptides, no exceptions — at either gym.
Active Performance is on Station Road in King’s Cliffe, a few minutes off the A43 and roughly fifteen minutes from Stamford, twenty from Oundle and half an hour from Peterborough. Free parking on site.
It is worth knowing the geography: King’s Cliffe has a Peterborough postal address but sits in North Northamptonshire, which puts it within easy reach of Stamford, Oundle, Corby and the Rutland villages as well as the city.
Station Road, King’s Cliffe, Peterborough PE8 6YH — a few minutes off the A43, with free parking on site. Around fifteen minutes from Stamford and twenty from Oundle.
Same coaching, same method, different rooms. Definition in Peterborough is a busy, heavily equipped bodybuilding gym; Active Performance is a quiet private studio. Pick on which room you would rather train in — and on the drive.
£40 for a single 1:1 session, or £350 for a block of ten (valid 16 weeks). Gym entry is settled at the venue.
That is most of who trains here. King’s Cliffe is the closest 1:1 coaching of this kind for the Stamford, Oundle, Wansford and Rutland side, and the room is far quieter than anything you will find in town.
Monday to Thursday 6:30am–9:00pm, Friday 6:30am–8:00pm, Saturday and Sunday 8:00am–12:00pm. Call or WhatsApp Nathan on 07592 833638 for available coaching slots.

Stacey lost 14.1kg between February and July, 95.1kg down to 81kg, and trained her way out of an everyday knee injury.
See the full story
At 60, John went from stepping onto a 10cm block to jumping a 60cm box, and lost 5kg along the way. The scale moved least of all.
See the full storyNo pressure, no obligation — a conversation about where you want to get to, and how to get there safely.