Case studies

Our work, with the numbers left in.

Thirty-three briefs, from a 1920s homeware brand to a nasal spray start-up and a trauma support charity. Every one is here with what we were asked for, what we built, and — where the case study publishes a figure — what it moved.

Branding & Design / Ecommerce / Web Development

Swan asked for 50% in a year. Year one closed 250% up.

A British homeware and appliance brand with heritage back to the 1920s set Castle one objective: increase revenue through the website by 50% in 12 months. Year one finished 250% up on the year before, on 115% more traffic and conversion lifted from 1.7% to 2.1%. Year two added another 361%.

250%sales, year one 361%sales, year two 102kInstagram, from 8k
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The Preferred Joinery website homepage and its product pages Lead Generation / Pay Per Click / Web Development

Preferred Joinery

A Liverpool workshop making bespoke windows, doors and staircases since 1997. Castle's Google Ads now generate more than £120k of revenue a quarter.

£120k+ Revenue per quarter from Google Ads
The rebuilt Insulate Your Conservatory website beside one of its Meta ads Lead Generation / Social ads / Web Development

Insulate Your Conservatory

A North Yorkshire conservatory roof specialist turning over £10k a month. A rebuilt website and Meta lead campaigns took it to £75k a month.

£75k Monthly revenue, from £10k
The West Derby Heating and Plumbing website homepage and its shopfront Generating Revenue / Lead Generation / Pay Per Click

West Derby Heating & Plumbing

A family-run heating and plumbing business in West Derby. £1,500 a month of Google Ads now generates £50,000 a month in revenue.

£50k Monthly revenue from Google Ads
A private GP talking with a patient in a bright consultation room Lead Generation / Pay Per Click / Social ads

Pall Mall Medical

A North West private healthcare provider whose online bookings grew 457% in 2019, with more than 600 new patients a month.

A marble clinic reception in a Dubai hotel with orchids and a sea view Lead Generation / Pay Per Click / Social ads / Web Development

Beverly Hills Wellness & Aesthetics

A Dubai aesthetics clinic with more than 700 leads a month, 17% of them booking, revenue up 87% and two new locations.

A young couple sitting on a grey velvet ottoman bed in a bedroom Ecommerce / Generating Revenue / Pay Per Click / Shopify / Social ads / Web Development

Bed Choices

An online bed retailer that went from £10,000 to £60,000 a month in 18 months, with a new website, ads on three platforms and email timed to payday.

A sales specialist showing a tablet to a surgeon and a theatre nurse in a hospital corridor Branding & Design / Lead Generation / Pay Per Click / SEO / Web Development

CLS Surgical and AmDel Medical

Two sister medical device suppliers with one agency behind both. New websites, brands and product listings, lead generation, SEO and GEO, and sales up 22% year on year.

A support worker and a young man cooking pasta together in a bright kitchen Lead Generation / Pay Per Click

Alternative Futures Group

A North West care charity with support roles to fill across more than 300 locations. Google Search now brings in around 300 completed job applications a month, at about £6 each.

The Morphy Richards website homepage shown in a browser window Ecommerce / Generating Revenue / Pay Per Click / Social ads

Morphy Richards

A heritage appliance brand built on retail, under new ownership. Castle ran its Google Ads at a ROAS of 19 for the online launch and lifted conversion from 0.9% to 3.2%.

19 Google Ads return on ad spend
The Laser Boutique homepage and its personalised birthday gifts collection Ecommerce / Generating Revenue / Social ads

The Laser Boutique

A family-run personalised gift maker with booming peaks and empty months. Selling for birthdays, anniversaries and thank-yous took it from £350k to £800k in 20 months.

£800k From £350k in 20 months
The Celtic Timber website beside a Meta ad for a solid oak mantel beam over a log burner Ecommerce / Generating Revenue / Pay Per Click / Shopify / Social ads

Celtic Timber

A Welsh timber merchant stuck on the same revenue for two years. Within three months revenue was up 30%, and the store now makes 127% more than it did in 2024.

30% Revenue growth in three months
The Arabella Designs website beside a Meta ad for a luxury olive velvet sofa with Trustpilot stars Ecommerce / Generating Revenue / Pay Per Click / Shopify / Social ads / Web Development

Arabella Designs

A bespoke sofa maker selling £300k a year. A rebuilt Shopify store, Google Ads and Meta Ads took it past £1.1m in sales within 15 months, with months over £130k.

£1.1m+ Sales within 15 months
The NextGen Pro charger on a white wall, between two Next Gen Charge Meta ads priced at £449 and £549 Branding & Design / Lead Generation / Pay Per Click / Social ads

Next Gen Charge

A new home EV charger installer, launched from scratch. Meta lead forms, Google Search and an API into the call centre delivered £1.7m in sales in year one at £5 a lead.

£1.7m Sales in year one
Clatterbridge Private Clinic Branding & Design / Lead Generation / Pay Per Click / SEO / Social Media / Web Development

Clatterbridge Private Clinic

How we made Clatterbridge Private Clinic visible in AI answers about private cancer care in the Northwest.

8+ Years working together, since 2018
Banner mockup of a PC screen on a desk with the Fizzy Whiz website on it. Ecommerce / Generating Revenue / Pay Per Click / Shopify / Social ads

Fizzy Whiz

Fizzy Whiz is an online retailer selling a vast range of wholesale supplies to small businesses to make their own bath, body and cleaning products. They came to Castle looking for help maximising their sales…

82% Sales, month-on-month