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Meet the Tristars  Coaching Team

Steve Wilson


I have been helping coach at TVTristars since 2009.  I also help cover some of the adult club sessions. I am a British Triathlon Level 2 Coach. I started triathlon in 2009 when my children took it up and joined TVTristars.  I like to contribute to the sport by coaching younger triathletes to help them reach their full potential in a fun atmosphere, at whatever level they chose.  I competes in triathlon at all distances but focus mainly on long distance events and hilly courses.

Tessa Minnis

I joined Thames Valley Triathletes in 2010 along with my 8 year old daughter and started coaching with the Tristars in 2011. I then went on to complete my British Triathlon Level 1 & Level 2 coaching qualifications.

From 2011 I have been heavily involved with the running of the junior Tristars club. As the club has grown we have thankfully had more volunteers taking on various roles. I compete myself at triathlon, mostly sprint and olympic distance. During the 2016/17 training season I will be coaching the Tristar 2 group.

Derek Bowley

I set up TVT in 1982/83 and during the early 1980s was involved with the set up of BTF coach education system. I am a BTF level 3 coach and a british cycling level 1 coach. I have coached an age group gold medalist and a European long course bronze medalist. I am currently head coach of the club. I have raced triathlons upto and including Ironman but am currently not racing due to a long term injury problem. I am currently involved in cross country skiing which I started because I wanted to try a winter triathlon. I had planned to be involved actively with the junior section to provide advanced cycling skills but because of Joyces involvement I seem to stay and help most weekends.

Chris Aitkin

I joined TVT in 2012 and started to help out with Tristars in 2014, shortly after my daughter started. I started coaching with the Tristars in 2015 as a Level1, qualifying as a Level2 coach in April 2016. I have done most triathlon distances and nowadays compete at various duathlon and cycle time-trial distances.  I will be coaching the Tristar3 group this season.


Robby Elson

My daughter Evie (TS3) joined TVT before me in 2014. As a professional personal trainer and sports coach specialising in running technique, Tessa and Steve invited me to help out on the track. Things seemed to spiral and in 2016 I completed my Level 2 Triathlon Coaching qualification.

I enjoy short triathlons and very long runs. I like rivers and trails but dislike swimming pools and treadmills. My latest passion is a mix of open-water swimming and trail running – SwimRun. I also coach football and kickboxing and during the 2016/2017 season I’ll be coaching the Youth triathletes.

Joyce Martindale


I joined TVT in 2012 on a “if you can’t beat them join them” approach after spending many years holding various bits of kit and cheering people on at triathlons.

I am a British Triathlon Level 2 coach, an ASA Level 2 Swimming Teacher and British Cycling Level 1 coach. I coach with both the TriStars and the adult section.

Am currently keeping fit (run, bike, swim included) for cross country skiing and may eventually (many, many years hence) attempt a winter triathlon.

Debbie Wilson

I first became interested in triathlon when our children joined the junior club, about 10 years ago. My first triathlon was a sprint distance in Warwick where our whole family competed. I have mostly done sprint distance triathlons as I am not a very good runner! I really enjoy swimming and over the last few years I have done some long distance swims 10-14km.

I started coaching TVTristars in 2013. As Steve was already coaching I decided that I would go and see what it was all about. I qualified as a Level 1 coach in early 2014. I went on a para-triathlon training day as well and would love to have para-triathletes in the children’s club.

I enjoy watching all the children grow and develop and move through from Tristarts to Youth.

Justin Baines

My eldest daughter started with Tristars in 2013. Shortly after I started helping as a parent helper before going onto complete my British Triathlon Level 1 coaching qualification. My youngest daughter also joined the club 2014. I have competed in Triathlon myself since 2012. During the 2016/17 training season I will be coaching the Tristar 3 group




Susan Martin

My history with TVT goes back to 1986 and for the next 20 years I was a competitor and coach for the club. I gave it all up in 2003 to have my children and started back with coaching this September. I am a Tristars swim coach



Jenny Gale


I did my first triathlon in 2013 and caught the bug! In 2014 my eldest started with TVTristars and recently I have been helping out with admin and now coaching – I have my British Triathlon Level 1 Coaching and currently help Tessa with the TS2 group.