Teaching swimming excellence the Ninja-Swim way!


Your Professional Swimming Instructor
with over 28 years experience​

Ken Carstairs

As a professional Swimming Instructor for over 28 years, I have become well-known and respected for my fun and effective approach. Over the span of my swimming coaching career I have perfected my own unique and effective teaching methods and certification system. I have several successful swim school franchises running under Seals Swimming Limited in Cambridgeshire since 1992.


I focus on water confidence and correct technique from the start to ensure an enjoyable and satisfying experience in the water, to ensure a life-long happy relationship with the water.


Ninja-Swim Classes

Ninja-Swim caters to swimmers of all ages (including adults) and experience levels with Ninja-Swim's wide variety of courses. Whether you or your child are a complete beginner or interested in working on a particular facet of your technique, you’ve got many options to choose from. We are very flexible so please get in touch if you have something special you need support with, we are always happy to help and advise.

Ninja-Swim run classes with no more than 4 children to ensure they receive the best attention and work hard in the session, while still having a fun and social experience.

We can also offer a 1:1 session if this suits your needs.

To book please get in touch with your own and your childs details, and we can assess where they will be best placed to suit their needs and their personality.

Parent Tot Sessions

Ages 2-3 years old.

Our parent and tot sessions are fun and relaxed. Our experienced teacher will teach you how to give your child water confidence so you can enjoy the water together.

RUNNING ON TUESDAYS from 4pm - 6pm.

£132.00 for 12 weeks.

30 minutes a session.

happy child and mom with swimming pool c

From age 3 and a half to Level 5.

This class offers a new and exciting approach to your swimming training. I developed my sessions from drills and lessons I have been teaching for many years to ensure you or your child learns in the fastest way possible for their needs.​

Monday, Tuesday and Wednesday 4-7pm (30 minutes a session.)

£132.00 for 12 weeks​

Ninja-Swim Sessions

From age 3 and a half to Level 5.

A great way to fast-track your child's swimming ability. Either to focus on technique or to increase their confidence.​

October 26th - 29th - £44.00

4 days - 30 minutes a day.

Monday to Thursday.


Crash Course


People are talking about us!

Ken really is a phenomenel teacher! His patience and ability to engage with my son kept him engaged and he achieved so much more in his first lesson than he has ever done with other swim schools.  My Grandson has trouble concentrating but Ken kept his attention and he loves swimming now. I would highly recommend Ken and Ninja-Swim. TK.

My daughter was very nervous and usually won't go in the water, but Ken got her in with his charm and kindness and she really enjoyed her lesson. They are not the cheapest but she has progressed so much quicker with Ninja-Swim so it all evens out really. LW

Jonathan has 1:1 lessons with Ken to work on his technique for comeptitions. He has improved so much working with Ninja-Swim. Ken is able to explain things in a way which motivates him and he makes big improvements very quickly.


Contact Us

01522 877182 or 07810 720829

Drop Ninja-Swim an email to BOOK and secure your place now.

Queens Park, South Common,
Lincoln LN5 8EW, UK


01522 877182 or 07810 720829

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