90% of companies that qualify for tax credits are failing to make a claim.

Don't miss out on a valuable cash injection for your business. It only takes a moment to see if you qualify and you could receive your payment within 28 days.

*Average R&D tax claim for ZLX customers is £77k per tax year

    See how much you could claim!

    Complete our brief questionnaire and we will tell you whether you qualify and how much you could claim.

    Are you a UK Registered company eligible to pay Corporation Tax?

    Thank you for your interest. Unfortunately, the services we offer are only available to companies registered in the UK to pay Corporation Tax. If you’re looking to open a business in the UK then please don’t hesitate to contact us on

    No upfront fees

    We are so confident of our success, we will only charge you if we are successful. No financial risk for you. No hidden charges or surprises.

    100% success rate

    Our experienced team specialise in R&D Tax Credits. That enables us to maintain a 100% success rate.

    We do 90% of the work

    We make the process as painless and hassle free as possible and need just a few hours of your time.


    average UK R&D tax return


    average UK R&D tax return when completed by ZLX


    ZLX returns are 43% higher than the national average


    ZLX is a specialist R&D Tax Credit consultancy. Our team of experienced consultants backed by our own in-house accountants and engineers take the time to understand the intricacies of your business. Our experience and background means we are able to deliver claims above the industry average.

    So, what are you waiting for?



    Dependant on the company's year-end we can claim for your two previous years.

    Our average claims over a 2 year period are £154,000 (2x£77K).

    What our clients are saying

    Understanding the clients needs and scalability. Showing empathy and professionalism. Offering personalized services and valuing relationships. You will find all by partnering with ZLX.
    They helped us in end to end planning and finalization of an R&D claim that resulted in maximizing our claim up-to twice as much as we had last year!

    Executive Head

    Currency Exchange Company

    ZLX have been amazing throughout the process from start to finish. From our initial calls through to detailed and comprehensive explanations of the submission criteria, we knew we were in good hands. The ZLX staff have been patient and understanding of our individual business dynamics and secured us a sizable claim. This has allowed us to explore new avenues for our business moving forward and we will absolutely be using ZLX’s services again in the future.

    Ashley Michael Boycott, Director

    Diabolus Esports

    ZLX completed our R&D Tax Relief claim, the tax saving and cash rebate that have been realised have made a massive difference to our company.

    We would have no hesitation in recommending future clients to ZLX. If you are considering making an R&D Tax Relief Claim then please look no further.

    Managing Director

    EOS Europe

    ZLX promised to work alongside our accountant throughout the process, which they did. The outcome of the whole process was that we received an unexpected amount of money back from the HMRC that I was VERY GRATEFUL FOR. I would recommend any business owner to investigate the opportunity of a tax relief rebate and I would highly recommend that they put it in the hands of ZLX. ZLX were professional and ethical from the start of the process until the end.

    Eco-friendly Energy Solutions

    Working with Tim from ZLX was a positive experience for us. He advised, managed and completed our R&D tax claim with the minimum of fuss. This meant we could get on with the important business of managing our organisation, safe in the knowledge that our best interests were being looked after. As a result, we can highly recommend ZLX should other businesses be looking for a partner that brings expertise, efficiency and professionalism in their approach to R&D tax claims

    Managing Director

    Catalyst Interiors

    I cannot recommend working with Ray, Amy, and ZLX highly enough.

    The pandemic was almost career-ending for our agency (and many others) but your guidance and work meant we have managed to navigate our way out of a very tricky position. We’re looking forward to working with you again. Thank you so much for everything.

    Founder, CEO

    Creative event design, digital and brand experience agency, specialising in fashion, beauty, lifestyle, and entertainment industries.

    Stephen & Ray, if I’m honest I never thought I’d be writing this email to you both BUT I’m ABSOLUTELY THRILLED that I am! My Finance Manager has just informed me that ZLX have made payment today of our R&D Tax Claim for the year 2018. Of all the years to have met you both and for ZLX to have delivered, as they said they would, on behalf of my Team, I would like to thank you both very much. I look forward to talking about how we approach the 2019 claim.

    Managing Director

    Event Production Company

    We would highly recommend ZLX to anyone interested in applying for R&D tax credits. Their service was friendly, professional, and efficient and they really helped take the headache out of the entire process.

    James Anderson

    NorthColour Ltd

    This is INCREDIBLE, AMAZING. I actually had to speak to Ray to double check the figures earlier as I was reading whilst on various Zoom calls and couldn’t quite believe the numbers!! Ongoing, I’ll be much more prepared in terms of understanding how to pull the right information together for you.

    Managing Director

    Production & PR company