How we work
Data-driven decisions, month on month.
Our results
We’ve helped hundreds of ecommerce stores increase their sales.
Average yearly statistics for our ecommerce clients across the home appliance, furniture, personalised gifts and fashion industries.

Home and Garden Extras
Home and Garden Extras came to Castle looking for help increasing revenue and stopping declining sales. We implemented several site fixes to improve the conversion rate and set up campaigns across Google and Meta to drive more traffic.


Nicholas Charles Fragrances
Designer-inspired fragrance brand Nicholas Charles came to Castle to grow their ecommerce business. Through highly targeted campaigns across Google and Meta we decreased ad spend while increasing sales.


Geepas
Electrical, appliance and homeware brand Geepas came to Castle to maximise conversions through their store and drive more traffic. We rebuilt the site with UX improvements, then set up targeted campaigns on Google and Meta.


Fizzy Whiz
Online wholesaler Fizzy Whiz came to Castle to maximise sales and achieve consistent growth through ads and email. After rebuilding the site on Shopify for better UX, we ran targeted campaigns on Meta and Google.

Supercharge your sales
We optimise these key areas.
We have a team of ecommerce marketing experts who can help your business grow. With experts across ecommerce web design and development, ecommerce SEO and ecommerce advertising, we implement omnichannel strategies that drive traffic, increase conversions and generate revenue.
PPC
Our PPC managers have a proven track record of helping businesses grow through optimised pay per click campaigns.
SEO
Our SEO experts use strategic content creation, link building campaigns and best practice on-site optimisation to help you outrank your competitors.
Web UX
Our team utilise a suite of tools and benchmarking facilities to recommend and implement UX improvements that maximise your conversions.
Amazon advertising
We are experts at marketing products through Amazon, working effectively across both Amazon Seller Central and Amazon Vendor Central.
Social ads
Our ecommerce experts get to know your business and your audience inside out, so we know the best ways to market your product and reach people effectively.
Email marketing
Our email marketing experts review your existing flows and campaigns and suggest ways to increase CTR, revenue, LTV and conversion.
What our clients say
Three owners, in their own words.
Castle International is rated 4.7 from 26 reviews.
Our success stories
Work we would point you at first.
Celebrating 10 years in business
Generated over £278 million in client sales in 2023.
If your store has stopped growing, we will go through the account and tell you where the next 20% is — before any talk of a retainer.







