Shopify vs a custom website for UK businesses: Shopify is the better choice when you have 20+ products, need reliable inventory management and payment processing, and your primary goal is ecommerce sales. A custom-built website is better when local SEO is critical (Shopify scores 40-60/100 on PageSpeed vs 90+ for custom builds), when you want to avoid Shopify's 0.5-2% transaction fees, or when your business is primarily service-based rather than product-based. Most UK service businesses get better ROI from a custom site; most UK product businesses with significant inventory benefit from Shopify's infrastructure.
Shopify is the world's most popular ecommerce platform. For a business that needs to sell products online with inventory management, multiple payment options, and reliable infrastructure, it is genuinely excellent. For a UK service business that needs local search visibility alongside an online shop, or a business paying 2% transaction fees on every sale, it may not be the right choice.
This is an honest comparison based on what each platform actually does well.
When Shopify makes sense for UK businesses
Shopify is a strong choice when:
You have a significant product catalogue. 20+ products with variants, sizes, or colours benefit from Shopify's inventory management. Bulk importing, variant management, and stock tracking are built in and work well.
Ecommerce is your primary business model. Shopify is built for selling products. If your website exists primarily to sell things (not to generate leads for a service), Shopify's checkout, cart management, and payment processing are hard to beat for the development investment required.
You need a large app ecosystem. Shopify has thousands of apps for email marketing, loyalty programmes, subscriptions, print-on-demand, and more. If you need functionality that is not built in, there is probably an app for it.
You want managed infrastructure. Shopify handles hosting, SSL, CDN, and security updates. You do not need to manage a server. For a business without technical staff, this is genuinely valuable.
You need multiple payment gateways. Shopify Payments (Stripe-based), PayPal, Klarna, Clearpay, and dozens more are available with minimal setup.
When Shopify is the wrong choice for UK businesses
You need local service lead generation. A plumber, solicitor, or cleaning company that also sells some products online needs a website built for local search first - with proper LocalBusiness schema, location pages, Google Maps integration, and a conversion-optimised contact flow. Shopify is a product sales platform, not a local service acquisition platform.
You are paying significant transaction fees. Shopify charges 0.5-2% transaction fees on every sale unless you use Shopify Payments (which is Stripe-based). At 2% transaction fee on a £50,000/year revenue, you are paying £1,000/year to Shopify on top of your monthly plan. A custom-built site on Stripe directly eliminates this.
Your PageSpeed performance matters most. Shopify typically scores 55-75/100 on mobile PageSpeed - better than Wix or Squarespace, but significantly below a custom-built Next.js site (90-97/100). For UK businesses competing for local search terms, this performance gap translates into ranking differences.
You need custom functionality Shopify cannot provide. Shopify's product and checkout models are opinionated. If you need unusual product configuration, complex B2B pricing, custom subscription models, or integration with legacy systems, the Shopify ecosystem may not accommodate it affordably.
You want to eliminate ongoing app costs. A basic Shopify store with the built-in features works well. But most growing businesses need apps: email marketing (£10-£25/month), reviews (£10-£20/month), subscriptions (£20-£99/month), advanced analytics (£15-£30/month). The total platform cost grows quickly.
SEO comparison: Shopify vs custom
Shopify SEO limitations:
- Fixed URL structure:
/products/product-nameand/collections/collection-namecannot be changed - Duplicate content from product variant URLs requires careful canonical management
- JavaScript-heavy themes reduce PageSpeed scores
- Limited control over site structure and crawl budget
- App-based SEO tools add cost and complexity
Shopify SEO strengths:
- Sitemap generated automatically
- Canonical tags added automatically (though sometimes incorrectly)
- Structured data for products (price, availability, reviews) is well-supported
- Page-level title tags and meta descriptions are easily editable
Custom website SEO advantages:
- Complete control over URL structure
- Server-side rendering for faster crawling and indexing
- Full schema markup flexibility (LocalBusiness, Service, FAQPage, HowTo)
- Higher PageSpeed scores (typically 90-97/100 vs Shopify's 55-75/100)
- No platform-imposed constraints on technical SEO
For a UK ecommerce business where organic search is the primary acquisition channel, the SEO advantage of a custom build is significant. For a business where the majority of traffic comes from paid advertising or social media, Shopify's SEO limitations matter less.
Cost comparison
| Shopify Basic | Shopify Plus | Custom (Octelis) | |
|---|---|---|---|
| Monthly cost | £29/month | £79/month | From £150/month |
| Transaction fees | 2% (non-Shopify Payments) | 0.5% | 0% |
| Required apps (typical) | £50-£100/month | £50-£100/month | Included |
| Total typical cost | £80-£130/month | £130-£180/month | £150/month |
| Custom design | Theme-based | Theme-based | Fully custom |
| PageSpeed mobile | 55-75/100 | 55-75/100 | 90-97/100 |
The total cost gap is smaller than it appears from the headline plan price. A custom-built subscription ecommerce site from Octelis costs £150/month with no transaction fees, no required apps, and full custom design.
How to decide
Choose Shopify if:
- You have 20+ products with inventory complexity
- Ecommerce is your primary business model and local search visibility is secondary
- You want a large managed app ecosystem
- You do not need the best possible PageSpeed scores
Choose a custom website if:
- You need local service lead generation alongside ecommerce
- You are paying significant Shopify transaction fees
- SEO performance is your primary acquisition strategy
- You need custom functionality that Shopify cannot provide
Choose neither if:
- You do not actually need ecommerce functionality (a contact form and phone number may serve you better than a full shop)
How Octelis builds custom ecommerce
At Octelis, we build custom ecommerce sites on Next.js with Stripe integration for UK businesses that need better performance, lower transaction costs, and SEO advantages over Shopify.
Our ecommerce subscription starts from £150/month and includes:
- Fully custom design
- Product catalogue and inventory management
- Stripe payment processing (no platform transaction fees)
- 90-97/100 PageSpeed scores
- Full local SEO and schema markup
- Monthly updates and support
Related reading:
- Ecommerce Website Design in Birmingham - platform choice for Birmingham ecommerce businesses
- Wix vs Custom Web Design UK - another platform comparison
- WordPress vs Custom Web Design UK - WordPress WooCommerce vs custom ecommerce
- How Much Does a Website Cost in the UK? - full breakdown of every price range
