About us

We’re Strata. Our name was chosen to reflect the many layers of your SME business, and how we can slot in with agility and flexibility to support you as a business owner or executive. As a team of accountants with industry experience we can help you to survive, thrive, and grow.

We Listen. Learn. Innovate. Deliver...

…as your accountants we do a lot more than file your accounts.

Meet the team at Strata, a dynamic, and ambitious group of finance professionals who deliver their vision of what accountants should bring to the table.

We’re here to get to know your business, assess your current financial situation, and help you figure out a financial plan that, when implemented with our experienced support, will put you on a path to long-term success. Trust us to remove the finance and process-based issues that worry you and help you move to a healthier financial future, reducing your day-to-day issues, and addressing long-term sources of stress.

A bit more about us…

With a background in industry, Kate leads the advisory team, having worked at a director level in the private and public sector, for both blue-chip, and owner-managed businesses. With a background in professional services, Phil understands the many and varied challenges of running an SME, both from a technical accounting viewpoint (the stuff that gives you headaches) and a digital solutions perspective (the innovation we bring with Xero and other ecosystem platforms, to make your business more productive, efficient and effective). Both Kate and Phil have also run their own businesses, so you can trust they know just how challenging the financial playing field can be for enterprise leaders, and the self-employed.

Building solutions to meet your unique financial needs

A compact but ever-growing team of experienced, personable professionals who like a laugh, but don’t mess around when it comes to nurturing the financial growth of your business, we have a lot of experience, and we work with companies holistically to offer intelligent, bespoke solutions designed to meet their unique needs, rather than grappling endlessly with a succession of challenging, isolated issues.

A client centred approach that takes you where you want to go

When you get in touch with us at Strata, we put your needs at the centre of our conversation. First, we’ll listen, learning all about your business, and where you want to take it. Then we’ll innovate, finding solutions that work for you, both now, and as you grow. Finally, we’ll deliver those solutions. This might mean being available to support with day-to-day problems, or to oversee the implementation of a larger scale strategy that takes your business to the next level, with bespoke financial planning to meet your needs.

We’re looking for a long-term relationship…

We can help you get your tax return in on time, and support your VAT related stresses, but we want so much more from our partnership – and we hope you do too. As your long-term strategic advisors, and experienced professional accountants, we’ll help you not only hit your deadlines and balance the books, but invest time in the future financial success of your business. We are your accountants; but we are also your growth partner.

Our core beliefs


Bend our ear with all of your financial, process and accountancy headaches. We will always make the time to thoroughly get to know you, and your business. We will have a scoping meeting with every new accountancy and advisory client to ensure we understand what you need.


When we know more about what keeps you awake at night, and where you want to take your business, we can start helping you plot a course to achieve financial clarity, strength and business success, whatever that looks like for you.


Our solutions are bespoke, innovative, and designed to help. We’re not just about spreadsheets,  we offer digital solutions and improved processes to streamline and improve the flow of your business, making life easier in delivering your services and products.


We don’t put plasters over problems, or walk away after invoices have been paid. As your trusted strategic financial partner and accountants, we deliver on our promises, today and tomorrow.

Meet some of the team…

Executive Team

Phil Colmer

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Kate Holden

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Qualified Team

Andy Winchester

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Harriet Lambourne

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Some of our trainees

Kai Campbell-Warner

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Kate Kennedy

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What our clients say

"Colmer Winchester took over my business accounts in 2016. Phil made the transition from our old accountancy firm seamless and introduced me to Xero which changed my business overnight! Since then the team has been a joy to work with & is always on hand to assist when we need them. "

Mark Gainford, CE MG Systems 2015 Ltd

"In one of the toughest times on record for people, not just businesses, we've been fortunate to have the support of the team at Strata to guide us through the last 12 months.We've received friendly, straightforward forward & very patient support during this time with the transition of our accountancy systems, then excellent (ongoing) training with using Xero."

Michael Wright, Founder & Director FiveFigs Ltd, Sept 2021

"We’ve been more than delighted with our partnership with Strata. Before we approached the team to help us move to Xero, we had used Sage. We knew that our information lacked depth, wasn’t timely and at times was inaccurate and we wanted to have our data at our fingertips. "

Iain Stewart, CE H2O Creative Communications - Nov 2021

"Strata have transformed our finance function. It used to be a drag on our time and resources, but we now have such up-to-date visibility over management accounts and all our financial information that we can now harness that data and make it work for us. We now use that real time financial data to make business decisions and plan ahead."

Director, Cool Camping - Nov 2021

Get started with Strata

Don't be scared we are not your typical team of accountants. We’ll help you understand where you are, discover where you’re going, and then we’ll get you there.