Checklist for WordPress Website: The Complete UK Guide

A checklist for WordPress website builds is something a lot of business owners only think about once things have already gone wrong. A missed SSL certificate, a plugin conflict on launch day, or a cookie banner that violates UK GDPR are not hypothetical problems. They are routine findings from web audits across SMEs in Northern Ireland and across the UK. ProfileTree, a Belfast-based web design and digital marketing agency, works through every one of the phases below with clients before a single page goes live.

Getting WordPress right is not complicated, but it is sequential. Skip the foundation, and the rest of the build suffers. This guide takes you through each phase in order, from server selection to pre-launch testing, with an emphasis on the UK-specific compliance requirements that most generic checklists ignore entirely.

Phase 1: Infrastructure and Domain Setup

Getting the foundation right saves significant rework later. Before any design or content work begins, these technical decisions shape everything that follows.

Choose a hosting provider with UK or Irish data centres. A server located in London or Dublin delivers noticeably lower latency for UK and Irish visitors than one hosted in the US. For businesses handling customer data, it also supports GDPR data residency requirements under UK law. Managed WordPress hosting from providers with local infrastructure is worth the modest additional cost over budget shared hosting.

Confirm your environment meets WordPress minimums. WordPress requires PHP 8.1 or higher (8.2 is the current recommended version), MySQL 8.0 or MariaDB 10.4, and HTTPS support. Many budget hosts still run legacy PHP versions that create security vulnerabilities and compatibility issues with modern plugins.

Register the right domain extension. For UK-focused businesses, a .co.uk extension carries geographic trust signals and can support local search rankings. A .com remains appropriate for businesses trading internationally or targeting a broader audience. For Republic of Ireland businesses, .ie requires registration through IEDR with proof of Irish presence. Avoid long, hyphenated domains; clarity and brevity matter more than keyword inclusion.

Install an SSL certificate immediately. Every WordPress site needs HTTPS from day one, not as an afterthought. Google has treated HTTP sites as insecure since 2018. Without SSL, Chrome and other browsers display security warnings that break visitor trust before a single word of content is read.

Phase 2: Theme, Design, and Accessibility

Theme selection is one of the most consequential early decisions on a WordPress build. The wrong choice creates performance and accessibility debt that is genuinely difficult to unpick later.

Choose a lightweight, performance-focused theme. Page builders like Elementor and Divi offer visual flexibility but carry a significant performance cost. For most SME sites, a lightweight theme built on Gutenberg (WordPress’s native block editor) is faster, leaner, and easier to maintain. Test any theme’s PageSpeed score in a demo environment before committing.

Meet WCAG 2.2 accessibility standards. Accessibility is not optional for UK public sector sites and is increasingly expected by enterprise clients across all sectors. WCAG 2.2 introduced new requirements around focus appearance (users must be able to see which element is focused), minimum target sizes for interactive elements (24×24 CSS pixels), and accessible authentication. Check your chosen theme’s accessibility documentation before installation.

Build a logical navigation structure. Navigation should reflect how users think about your content, not how your business is internally organised. Use a flat structure where possible, with no more than two levels of navigation depth for most SME sites. Every page should be reachable within three clicks from the homepage.

Set the correct permalink structure before publishing any content. Go to Settings > Permalinks and select “Post name” as your URL structure immediately after installation, before publishing any content. Changing the permalink structure after content is live breaks existing URLs and creates redirect work.

Scores are indicative across standard hosting environments and vary significantly based on theme, plugins, and configuration.

Phase 3: Technical SEO and AI Search Readiness

The way search engines and AI systems read your site is determined by decisions made in the CMS, not by the content alone. This phase covers the technical layer that most content-focused checklists overlook.

Install and configure an SEO plugin. Yoast SEO and Rank Math are the two leading options for WordPress. Both handle XML sitemap generation, meta title and description fields, and basic schema output. Rank Math includes more schema types in its free version, which matters for the next point.

Implement schema markup for key page types. Schema is structured data that tells search engines and AI systems exactly what type of content a page contains. For a service business, LocalBusiness schema on your homepage and contact page, Service schema on individual service pages, and FAQPage schema on any FAQ section are the three most valuable implementations. Pages with schema are significantly more likely to appear in AI Overviews and rich snippet results.

Configure your robots.txt file deliberately. The default WordPress robots.txt disallows crawling of the admin and includes directory, which is correct. What it does not do is manage access for AI crawlers. If you want to block GPTBot (OpenAI’s crawler), ClaudeBot, or other LLM crawlers from indexing your content, add specific disallow rules for those user agents. If you want AI citation visibility, leave them open. Either way, this should be a deliberate choice rather than a default.

Submit an XML sitemap to Google Search Console and Bing Webmaster Tools. Most SEO plugins generate sitemaps automatically at /sitemap.xml or /sitemap_index.xml. Submit this URL to both platforms after launch and monitor for crawl errors in the first 30 days.

Verify Google Search Console and Bing Webmaster Tools ownership. Both platforms provide HTML tags or DNS verification methods. Connecting your site to these tools is the only way to see what queries your pages appear for, identify crawl issues, and monitor Core Web Vitals performance over time.

“The sites that struggle in search are rarely struggling because of their content. They’re struggling because the technical layer underneath isn’t giving search engines what they need to understand and rank the pages. Get the schema right, get the sitemap submitted, and get Search Console connected before you write a single blog post.” — Ciaran Connolly, Founder, ProfileTree

Phase 4: Security, Legal, and UK GDPR Compliance

This is the phase where UK businesses most commonly cut corners and where the consequences are most visible. A poorly configured cookie banner, a missing privacy policy, or an unregistered ICO account are not minor oversights.

Install a reputable security plugin. Wordfence and Solid Security (formerly iThemes Security) are the two most widely deployed options. Both provide firewall rules, login attempt limiting, and malware scanning. Critically, both send alerts when something changes, which is more valuable than their blocking capability alone.

Enable two-factor authentication on all admin accounts. WordPress admin accounts are a routine target for brute force attacks. Two-factor authentication (2FA) via an authenticator app makes credential-based attacks effectively useless. Most security plugins include 2FA configuration. There is no reason not to enable it.

Register with the ICO if you process personal data. Most UK businesses that collect any personal data through their website (contact forms, newsletter sign-ups, analytics) are required to pay the annual ICO data protection fee. The fee starts at £40 for small organisations. Non-registration is a compliance risk, not a technicality.

Publish legally compliant pages before going live. Three pages are required for most UK business websites:

Configure a UK-compliant cookie consent banner. Cookie consent tools like CookieYes or Cookiebot can be configured to meet UK PECR requirements, which require opt-in consent for analytics and marketing cookies, not just notification. Poorly built consent banners also affect Core Web Vitals scores if they block page rendering. Choose a tool that loads asynchronously.

Phase 5: Performance and Core Web Vitals

Google’s Core Web Vitals are a direct ranking input. Interaction to Next Paint (INP) replaced First Input Delay as a metric in March 2024 and measures how quickly a page responds to user interactions throughout the entire session, not just at load.

Enable caching through a dedicated plugin. WP Super Cache and W3 Total Cache are the two free options most commonly deployed. WP Rocket is the leading premium option and consistently produces better results with less configuration work. Caching stores static versions of pages and reduces server processing time on repeat visits.

Compress and serve images in next-generation formats. WebP and AVIF formats deliver the same visual quality as JPEG and PNG at significantly smaller file sizes, typically 25–35% smaller. Plugins like Imagify or ShortPixel handle bulk conversion and compression automatically on upload.

Implement lazy loading for images and videos. WordPress has had native lazy loading since version 5.5, applied automatically to most images via the loading="lazy" attribute. Check that your theme is not overriding this and that any third-party video embeds are also loading lazily rather than blocking page render.

Use a Content Delivery Network (CDN) for static assets. A CDN stores copies of your CSS, JavaScript, and image files on servers distributed globally. For a UK-based business targeting UK visitors, Cloudflare’s free tier delivers meaningful performance improvements and also provides DDoS protection as a secondary benefit.

Monitor Core Web Vitals in Google Search Console. The Core Web Vitals report in Search Console shows LCP (Largest Contentful Paint), INP, and CLS (Cumulative Layout Shift) for real users across your site. Address any pages flagged as “Poor” before investing in content or link building.

Phase 6: Pre-Launch Quality Assurance

The final phase before going live. Work through this methodically; a checklist run at speed misses things.

Test across multiple browsers and devices. Chrome, Safari, Firefox, and Edge on both desktop and mobile. Pay particular attention to Safari on iOS, which handles CSS and certain JavaScript behaviours differently from Chrome. Use BrowserStack or a real device set for cross-browser testing.

Check that all forms submit correctly and route to the right inbox. Submit every form on the site, including contact, enquiry, and newsletter sign-up forms. Confirm the confirmation message displays correctly and the notification email arrives in the right inbox. Check spam folders.

Verify all internal links resolve correctly. Broken internal links create both a poor user experience and a crawlability issue. The free Broken Link Checker plugin can scan your site before launch. Remove or redirect any broken links before going live.

Set up automated backups before launch, not after. UpdraftPlus is the most widely used free backup plugin for WordPress. Configure it to back up both the database and files on a daily schedule to an off-site location such as Google Drive, Dropbox, or Amazon S3. The first backup should complete before the site is made public.

Run a final PageSpeed Insights check on your homepage and key service pages. Google PageSpeed Insights (pagespeed.web.dev) provides both lab data and field data for real user performance. Aim for a score above 80 on mobile for commercial pages. Scores below 60 on mobile are worth addressing before launch.

For businesses that want expert support at any stage of this process, ProfileTree’s web design team in Belfast works with SMEs across Northern Ireland, Ireland, and the UK through every phase from initial planning to post-launch optimisation.

Conclusion: Checklist for WordPress Website

A WordPress website checklist is only useful if it’s worked through in sequence. Infrastructure decisions made in Phase 1 affect every phase that follows. Compliance decisions deferred to “after launch” rarely get addressed. The businesses that end up with fast, secure, search-visible websites are not the ones with the largest budgets. They’re the ones that followed a structured process.

If you’d like ProfileTree’s team to audit your existing WordPress site or support a new build, get in touch with our web design team.

Frequently Asked Questions

Got a question about building your WordPress site? Here are the answers SMEs in Northern Ireland and across the UK ask most.