What people say about us

Below you will find a variety of testimonials from our clients and members.

Testimonial from Caroline Clarke

Owner of CMC Bookkeeping


“It was so, so useful!  I did a Payroll Management Diploma last year but your webinar explains things much more clearly.”

Testimonial from Joanne Tatler

Employee of Van Blanc Transport Limited


“Thank you for a really great day yesterday, I felt that I really learnt a lot and that’s down to the way you [Diane] taught us.”

Testimonial from Stuart Middleton

Managing Director of Aquacut Limited


“COS has been Aquacut Limited’s bookkeeper and trusted advisor for a number of years and have been a vital partner during our exciting journey as we developed our business.

When I bought the business seven years ago, COS were the bookkeepers at that time.  We wished to transition from a one-user, dated accounting system to one based ‘in the Cloud’ and COS were important in advising us of our options and holding our hands during the transition.

Our business is over four times as large as it was seven years ago.  Our company has developed into e-commerce and entered new markets.  COS has been professional advisers, with great feedback and recommendations as well as responding professionally and quickly as we explored together various systems we could adopt.  I’m confident we would have struggled without COS support as they have been there for us, every step of the way.Karen and her team are professional, but user friendly in their approach to business. I cannot recommend them highly enough.”

Testimonial from Peter Brassington

Senior Partner at EKW Chartered Accountants


“I have worked with COS Bookkeeping for over ten years and have always found them to be knowledgeable and efficient. They provide a great deal of support to our mutual clients not only in terms of bookkeeping but also the industry and software knowledge they use to assist clients run their businesses more efficiently.”

Testimonial from Simon Leigh

Managing Director at Allens Chartered Accountants


“COS Bookkeeping have for many years been a huge support to Allens and our clients. They provide superb service and the quality of the training is top notch. They are consistent, extremely professional and, unsurprisingly, in great demand. I would not hesitate to recommend Karen and her team, and have done many times always with the best outcome for my clients. Karen is passionate about her work as well as being a great communicator with clients on all levels. She deserves her success.”

Testimonial from Simon Edmondson

Business Development Consultant


“It has been my pleasure to have known Karen, Diane and the COS team for nearly ten years now. We first met due to my work with The Federation of Small Businesses and COS have been an important supporter of the organisation.

In all my dealings with COS I have found them to be highly professional and diligent throughout. Furthermore, they have positioned themselves as an integral part of the business community in the Manchester area due to Karen and Diana’s ever-present high profile.I would also go on to say that as a company they are very well respected by the Manchester businesses as bookkeepers and experts in their field.”

Testimonial from David Hunt

COS Member


“Thanks to COS, I was able to switch to bookkeeping from my original sales positions.
Their training sessions were A1 and I was able to carry out bookkeeping at various establishments, with as much help as I needed from Cos personnel.
I am now firmly established as a bookkeeper, but still have the help from COS when needed.”

Testimonial from Chris Wildman

Owner of A and B Services


“COS Bookkeeping offer a fully comprehensive service covering all aspects of bookkeeping and accountancy. Their friendly, professional approach makes any dealings with them a pleasure, whether it be for technical support on accountancy issues or software – they never let you down. The business model they have developed – being able to provide temporary staff, client referrals, training etc, plus presenting objective in-depth views on new and developing software – is to be applauded. I have been a member for the last seven or eight years and they have been a tremendous help to me when I’ve needed it.”

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