We’re Expert eCommerce Consultants Who Get Online Businesses Growing

eCommerce Consultancy for Ambitious DTC Brands

We’re a data-obsessed, lean thinking eCommerce Consulting Agency based in East London. Results-driven. User-centric. Agile. Expert. Our eCommerce Marketing Consultants augment your team with specialist eCommerce Strategy knowledge to acquire, retain and convert more people.

eCommerce Consultancy for a complex and connected world.

The way people buy things has changed. Digital-enabled. One-click convenience. Same day delivery. Changing with it how teams think about eCommerce – from Online & Offline. To multichannel. Then Omnichannel. Now Total Customer Experience – what endures is that ventures which relentlessly meet the needs of the customer, win.Our eCommerce Website Consultants are high-flying, hands-on, make-it-happen types who work with ambitious eCommerce businesses to drive forward performance, up skill teams and delight customers. And, they’re rather good at it too.

Why Us?

Why hire an eCommerce Consultant? Why hire The Fifth Mark?

We’re a Data-Driven eCommerce Consulting Agency

eCommerce businesses give our Consultants an abundance of data and user behaviour insight which can be used to understand and improve online revenue performance. Our team of eCommerce Analysts work shoulder-to-shoulder with our eCommerce Consultants to provide rich, actionable eCommerce insights from which Strategy is crafted. Smart.

A Growth Marketing Mindset for eCommerce

We specialise in partnering with ambitious, high-growth ventures. We apply this mindset to our eCommerce Consulting Services using the Five Mark Method – a modular framework that applies Growth Science to your existing skills to create a wire-tight, structured way of turning truths and ambitions into never-look-backs. Simple.

We support and empower your eCommerce team

Our eCommerce website consultants can also act as a“bridge” when there are critical resource or knowledge gaps in your eCommerce and Digital Marketing team structure or provide leadership and support in times of business change or growth. Totally collaborative and non-political, we help to grow and cultivate eCommerce expertise across your business.

We think beyond the click

Total customer experience is the only experience. Our Growth Marketing approach connects user psychology, data analysis, digital marketing, eCommerce and UX together as a team. That way, insights, ideation and testing create concrete strategies which drive great and greater things.

We bring fresh, innovative eCommerce thinking to your business

Our eCommerce Website Consultants work with a portfolio of high-growth businesses. On-boarding us as an extension  of your team allows your business to benefit from a wealth of industry insights and take inspiration from fresh strategies that are used in a variety of business verticals.

We started working with Siân and The Fifth Mark at the beginning of the first lockdown when we had a barely functioning website. We needed to work quickly to shift all of our attention to growing our eCommerce. Siân helped bring clarity to the mind-boggling world of digital marketing and developed a concise growth strategy. Working with Siân and The Fifth Mark Team resulted in huge growth for our business across the board, not just DTC. The Fifth Mark’s expertise and professionalism has been massively refreshing and has built a foundation for us that I will be forever grateful for. No doubt that we will continue to work together.

Theo Garcia, Co-Founder & CMO, Solo Coffee

Working with Siân and The Fifth Mark team has and continues to be a pleasure. They have helped steer us through a huge growth period, always acting with honesty, determination and intelligence, and have driven our Google and social advertising from strength to strength. They treat our business like it’s their own and have built us a strong foundation for long term, sustainable growth. Highly recommend to anyone looking to scale fast and efficiently from the start.

Julian Parmiter, Co-Founder, Create Academy

Siân is not only highly strategic but has a deep operational understanding across the breadth of digital platforms and mediums. This means she ideally placed to inspire and lead teams to deliver at speed but also has the in depth knowledge to challenge, ask difficult questions and ensure the best possible job is done. Siân is an outstanding leader and digital thought leader.

Tessa Tysome, UK Marketing Director, Nike

Siân has a wealth of knowledge and experience in digital. Working with Siân was a pleasure, her working style is very collaborative and upbeat, ensuring she takes people along the journey, with a clear explanation of why and is very approachable. It was great working with her on a digital growth project and hope to work together again.

Mei Wilson, Digital Marketing Manager


How can our eCommerce Management Consultants help? 

Our eCommerce Strategy Consulting Services tackle finding the right people, bringing them to your eCommerce store, making it impossible for them not to buy from you and inspiring them to tell everyone about it. Time after time. Here’s a few snippets of what a Fifth Mark eCommerce Consultant can help out with:


eCommerce Marketing Strategies which drive quality traffic to your eCommerce website


Improving Conversion Rate by enhancing the eCommerce user experience from first click to final delivery


Designing compelling CRM and Email Strategies which turn customers into advocates


Streamlining eCommerce trading reporting with automated dashboards and agile eCommerce analyst services

Contact Us

Get growing. Book a discovery call with an expert eCommerce Consultant.

eCommerce Consultant FAQs

Here are a few questions we often get asked about our eCommerce website consultants. If you’re looking to hire a uk eCommerce consultant or appoint an eCommerce consultancy London give them a quick read. If you have any further questions, do get in touch, we’d be delighted to help.

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