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Personal Training & Nutrition

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I launched my business as a Personal Trainer in January 2009 and have been lucky enough to work with some amazing people during this time. Every client I have worked with is special and unique to me, and I pride myself on offering a level of service that is personalised, facilitating life change that stretches beyond that hour or two a week.  

I don’t believe in being cooped up indoors all day – training should be an escape from the four walls of the office, and not a slightly smellier version of it (e.g. underground gym dungeons!) This is why I have chosen to train my clients in the great outdoor spaces of London. I am obsessed with running, but I won’t force you to run the next marathon with me, although I wholeheartedly believe you can, it just takes some people longer than others.

The success of any fitness programme is inextricably linked to correctly balancing exercise with nutrition – whatever your goals are you won’t get there by putting the wrong fuel in the tank. In 2011 I graduated as a Nutritionist with First Class Honours and so my offering is unique in providing best practice training and nutrition that is based on Scientific rigour and not the latest fad.

I have got people in shape for weddings and holidays, shaved times off PBs, helped people with injury rehabilitation and back care, trained people before and after births and a whole lot more. I am also a freelance health journalist, writing regularly for titles such as Women's Health, Vitality Magazine and Runner’s World, as well as being a quoted expert in various other publications.

Sarah O'Neill

sarah o'neill

What I've been up to....

September '10 - 11


Resident Personal Trainer on SKY 1's 'A League of their Own' Sports quiz, with team captains Jamie Redknapp and Freddie Flintoff, hosted by James Corden. The role included demonstrating some of the fitness challenges onscreen for the 'reveal' and coaching the celebrities on how to safely perform the exercises. Running on the same treadmill as Mo Farah for series 3 was a definite highlight!

Sarah O'Neill in
Stella Magazine October 2010 Sarah O'Neill in BodyFit

Sarah in print

Sarah O'Neill in Women's Fitness Velvet magazine Health & Fitness

Click on magazines to read

January - December 2012


Founder and team leader of the '12in12' (, a yearlong fundraiser for charity HOPEHIV, whereby a team of 27 spent 2012 raising funds for children orphaned or affected by HIV/AIDS in sub-Saharan Africa. My challenges included Disney World, London and Edinburgh marathons, my first ultra (35M), my first Olympic triathlon, bog snorkelling triathlon, cycling London to Paris and Bruge to Amsterdam, the 3 Peaks Challenge, trail running and Scotland Coast to Coast. I finished the year running 12 marathons in 12 days from North Yorkshire to London, with a team of three other runners. I also organised various fundraisers throughout the year such as spinathons, yoga challenges, swimathons and sports day races. As a team we raised over £160,000 for HOPEHIV, which I am delighted about, and I have now committed to working one day a week within HOPEHIV organising further sporting this space!

May 2013 onwards....


Pulling together my love of both FOOD and RUNNING, I write a monthly Nutrition blog for Runner's World. My column is devoted to picking out top ingredients, explaining their benefits for runners and then wrapping them up into great, inspiring recipe ideas that will tantalise the tastebuds without packing on unwanted pounds.


Check out for my latest work!

this year league 12in12

February 2014 onwards....


Bridal training is a speciality of mine, and I love nothing more than seeing gorgeous girls rocking their wedding dresses! I recently filmed a series 'Bridal Bootcamp' on My Wedding Scrapbook: instructional videos for brides, including some of my favourite conditioning moves to do at home, and videos from the kitchen on how to eat well in the run-up to the big day. All available at:

May 2015


In May 2015 I staged a fundraiser called 'Hope in Heels', a 2.4km 'run/walk/totter' in Battersea Park. The event kicked off with a hip hop dance warm-up, followed by a circuit of the park which included entertainment such as butlers in the buff (and a pensioner in the buff....thanks Dad...), selfie-stations, vodka jelly shots and break dancers. We then enjoyed foot rubs, massages, manis, pedis and prosecco and a live DJ. The event raised over £10K for WeSeeHope (formerly HOPEHIV).

hope in heels 2015

October 2015 & August 2017 onwards!


I gave birth to a son in October 2015 and a daughter in August 2017...and I must say the combination is more exhausting than running 12 marathons in 12 days!! As my family has grown so has my trainer team - I've been busy seeking out the best trainers in SW London to run the PT sessions, recruiting a team who I am proud to say are delivering amazing results for all our clients. I am still heading up the nutritional side of the business, and really enjoying helping our clients make life-long changes. My nutrition degree means we're able to offer more than most PT businesses, by combining training expertise with this specialist knowledge. I am also loving devising training plans, and have been delighted with the results of all our marathon runners, who have smashed some incredible PBs!