Personal Trainer in Pinner, Harrow, North West London
At Core Fitness, your dedicated Personal Trainer in Pinner, Harrow, North West London, we help clients achieve fitter, healthier lives through structured, personal training. We combine knowledge, experience, and clear guidance to drive lasting results.




// Experienced. Supportive. Holistic.
Meet Nida Mirza – Personal Trainer in Pinner, Harrow, North West London
Hi, my name is Nida Mirza. I’m an experienced personal trainer in Pinner, Harrow, North West London, a nutritional coach and a mum of two. I am a dedicated fitness trainer with over 15 years of experience, specialising in Postural and Corrective Exercise, and possessing a strong background in Weight Loss and Nutrition, with 10 years as the top trainer at Virgin Active and Racquet Clubs. I am passionate about guiding individuals towards achieving their wellness goals. I firmly believe in the holistic nature of a healthy lifestyle, emphasising mobility, nutrition, rest, and sleep.
// EXPERIENCE. EXECUTION. EXCELLENCE
What We Actually Do
I also specialise in working with clients with autoimmune conditions and have spent 8 years as an independent trainer and fitness coach for private clients.
I’m not your average Personal Trainer in Pinner, Harrow, North West London! I’ve dedicated my career to changing people’s attitudes toward being healthy and adopting fun lifestyle choices to improve health, lose body fat, and, most importantly, build people’s confidence.
If you’re a busy professional looking to reach a specific fitness goal, you need to know your Personal Trainer has the skills, knowledge and experience to get you there and is as committed as you.
I have over 15 years of practical training experience, a broad range of skills and qualifications, and a high commitment to my clients. This isn’t just a job to me; it’s my absolute passion: helping people achieve real results with training programmes that are unique to them, varied, and designed for maximum impact.
My goal is to empower you to make choices and changes that will help you move closer to your goals without feeling like you’re on a diet or affecting your personal life. Most importantly, our time together—whether in person or online—should be fun. Alongside these goals that we will set together, we will look at realistic results based on the time and commitment you have to dedicate to your current targets. When we work together with honesty and set realistic goals, the body fat will stay off, and you won’t set yourself up to fail. This journey is a lifestyle change, and it’s for life.

// Your Own Fitness Trainer
Our Personal Training Services & Packages
At its core, Core Fitness Performance is led by a personal trainer in Pinner, Harrow, North West London, specialising in high-level fitness programmes. The focus includes building strength, delivering intense cardiovascular conditioning, and preventing injury through structured, expert training.
Why Choose Us As Your Fitness Trainer

Personalised Plans
Core Fitness Performance specialises in creating tailored fitness plans to match your unique goals and fitness level. Whether you aim for fat loss, muscle gain, or injury recovery, the program will be customised specifically for you.

Qualified Trainer
Nida, the chief trainer and owner, has over a decade of experience in personal training. She has earned many clients’ trust by offering expert knowledge and personalised coaching that delivers results.

Specialised for Women
Core Fitness Performance offers programs specifically tailored to women’s needs. Nida is a skilled female personal trainer who understands women’s unique challenges and goals in their fitness journey.

Private Training Studio
Core Fitness Performance operates out of a private studio in Harrow, offering a comfortable and non-intimidating environment for clients to train, ensuring you can focus solely on your fitness journey without distractions.
// Train With The Best
Keep Your Body Fit & Strong
Keeping your body fit and strong is about more than appearance; it’s about building resilience, improving function, and supporting long-term health. At Core Fitness, we focus on structured training that enhances strength, mobility, and endurance. With the correct guidance, you’ll move better, feel stronger, and reduce the risk of injury. Each session is tailored to your needs, helping you build a body that performs well in everyday life.
// Our Recent News
Read Our Latest News
Ashish began training with me twice a week in 2021. He came to me after struggling with the lingering effects...
Jasmine approached me in May 2023 with a clear goal in mind: she wanted to lose as much weight as...
Celine approached me in February 2024 with a strong determination to lose weight and tone her body. At the time,...