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We are currently experiencing an increased volume of calls to our customer contact centre, please contact OneNK@gll.org or visit the centres directly and we will be happy to help. We apologise for any inconvenience caused.

Main Pool

Our 25m pool offers a great range of sessions for adults, children and families – including our Interactive Flume, fun float sessions and fitness swimming.





Teaching Pool

Situated as part of the main pool hall. It's available for both casual use and programmed sessions such as BETTER Swimming School lessons. 


Magna Carta Splash

A world of fun and adventure in the NEW magical Magna Carta Splash. Specially designed for youngsters, shallow pools lead to water "confidence building" kingdom with a Magical Castle, Horse Slide and King John Island. This area is open alongside the Small Pool only.


Interactive Selfie Flume

The UK's first ever interactive flume - The NEW digitally-interactive water flume, letting kids slide down whilst challenged to tap every marker as they make their descent through different colored flashing lights.

The flume is open during Family Fun sessions.



Our modern gym is fully equipped with Matrix cardio equipment including treadmills, cross-trainers, bike and rowers. Our weight selection varies from Matrix resistance machines to dumbbells ranging from 2kg to 40kg, accompanied by a squat rack, cables and smith machines. Want to get functional? From Bosus, to Kettlebells and a large TRX frame – we’ve got everything you need for a great workout!

Our Fitness Instructors are on hand for any advice you may need, and can be booked out for a personalised programme and refresh sessions every 6-8weeks to keep you on track.






We run over 30 Fitness Classes a week with vibrant studio equipment and highly motivated, experienced Fitness Class Instructors. From high energy like Les Mills Body Attack and Total Body Conditioning, to low impact Pilates and Water Workout, we have a class for all ages, abilities and fitness levels. All 3 of our studios are available for hire too! 




Virtual Cycle Studio

Our cycle studio doubles up as a Virtual Cycle Studio with Virtual MyRide. At the touch of a button you are immersed into a virtual cycle experience.


Sports Hall

We offer a great range of activities in the sports hall courts including 4 badminton, 2 basketball and 2 mini football courts, along with a fantastic holiday activity offering with our partners MSP.


3g Pitches

Our newly refurbished 3G pitch is available to hire in 55minute blocks. We cater for 5 a-side and 9 a-side Football and Hockey games. The pitches are fully floodlit and goals for both sports available as part of the sessions.


Coffee Corner

Our Coffee Corner Café is proud to offer a wide range of different refreshments at food goodies. From a freshly ground coffee, to ice slushes, jacket potatoes to cake – there’s something for everyone. With free Wi-Fi available, you can chill out on a sofa down in our reception/cafe area or relax up on our quiet viewing galleries overlooking the pools.


NK Activities

Our NK Community Sports and Activity team works across the North Kesteven District and Lincolnshire to deliver interactive activities that cater for all; such as our climbing wall, mini Ninjas obstacle course, skate park and much more. These activities are aimed at ages 4+ to help keep the mind and body active for our younger participants. Our dedicated sports team also provide activities which target the over 50s. These activities encourage the over 50s to stay active, stay healthy and promote a healthy lifestyle.

Over 50s sessions include walking sports such as football, netball, hockey and small indoor club games.




Terry O'Toole Theatre

The Terry O’Toole Theatre is an intimate, 200 seat Arts & Community venue situated within the One NK Centre.

Described as a ‘Hidden gem’ by BBC Radio Lincolnshire, the theatre presents a high quality programme of professional drama, music, dance and children’s theatre, complemented by a vibrant range of community and hire performances.

Along with as performances, the theatre works in partnership with LOV [Lincolnshire One Venues], SoundLincs and Sunday Folk to deliver a lively participation programme, including schools’ outreach, Folk and Community Music workshops.  The theatre is also home to ACTion Community Theatre, our lively, inter-generational, in-residence amateur theatre company.