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Royal Mail Postcode Checker: How to Use and Find UK Addresses

George Thomas Cooper Clarke • 2026-05-21 • Reviewed by Ethan Collins

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wrapper”. So we need to wrap the entire content inside

with a

. Also require intro

with class “n24-p wp-block-paragraph” itemprop=”description” (max 2 sentences). The intro currently has 3 sentences? “If you’ve ever had to mail a package and realised you don’t know the full postcode, you’re not alone. The Royal Mail postcode checker is the UK’s official free tool for looking up accurate addresses and postcodes, covering all UK addresses with a database of roughly 1.7 million postcodes, according to a Government Digital Service blog (MOJ). Here’s how to use it, what it can’t do, and which alternative might suit you better.” That’s 3 sentences. We need max 2 sentences. So we need to combine or trim. Also need

with exactly 4 cards (n24-card-num 1-4). Present. Stats line after intro? It’s after intro now. Need key facts table near top – yes there is a table near top. H2s per contract? The contract lists H2s: “What is the Royal Mail postcode checker?”, “How to use the Royal Mail postcode finder?”, “What are the limitations of the Royal Mail postcode checker?”, “Are there free alternatives to the Royal Mail postcode checker?”, “How to find a postcode using the Royal Mail tool?” Also “Clarity check” and “What the experts say” and “Frequently asked questions” and “Related reading”. Those are fine. Need 2-4 blockquotes from ≥2 speakers. Currently there are two blockquotes from Parcelforce and Smarty – that’s fine. FAQ with ≥5

– there are 7, good.

Gate 2: Contract coverage. Must cover certain questions. All appear as H2s or H3s. Good.

Gate 3: Claim = source. Every

  • in snapshot cards, key insights, timeline, confirmed-list must have named source anchor. Check snapshot cards: each
  • has an anchor link, but some anchors have no authority context (e.g., just “Smarty” or “Parcelforce Worldwide”). Gate 14.5 says expand anchor text to include 2-4 word authority descriptor. So we need to adjust anchor texts. Also need to ensure each claim in snapshot cards has a named source anchor. They do. But some anchors are bare like “Smarty” – we can change to “Smarty (address verification provider)” or similar.

    Gate 4: Fact lock vs verified_facts. The verified_facts is empty in the input, so no conflict.

    Gate 5: FAQ dedup. Check FAQ items against H2/H3 content. There is H2 “How to use the Royal Mail postcode finder?” and FAQ “How do I find a postcode for a business…?” and “Can I search by partial address?” Those are not identical. So no dedup needed. Minimum 5, we have 7.

    Gate 6: Link hygiene + diversity. Internal links: two at the end: “Internet Speed Test Free” and “Best WiFi in My Area” – they have full URLs with domain. Should strip target/rel for internal. They are internal? The domain is trendymagazine.uk, so yes internal. Remove target and rel. External links: ensure target=”_blank” rel=”noopener nofollow”. Already have that. Max 3 per domain? Royal Mail domain appears many times – we have many links to royalmail.com. Need to ensure no more than 3 per domain? The gate says “Max 3 per domain”? Actually Gate 6 says “Each external URL at most once. Max 3 per domain.” That means for each domain, we can have up to 3 links, but each URL should be unique? It says “Each external URL at most once” – that means we shouldn’t duplicate the exact same URL multiple times. That is already violated: we have multiple links to same URLs (e.g., https://www.royalmail.com/find-a-postcode appears many times). We need to reduce to at most 1 instance of each URL, and at most 3 links to the same domain. So we need to consolidate. Same for Smarty and Parcelforce. We’ll have to choose which occurrences to keep and which to remove or change to different URLs? But the contract says each claim must have a source. We can keep the first occurrence of each URL and then in subsequent references, we can either use a different source or just cite without hyperlink? But the rule says each external URL at most once, meaning we shouldn’t have multiple tags with the same href. We can rephrase to “according to Royal Mail” without a link if we already have the link elsewhere. But we need to be careful. The best approach: for each domain, keep up to 3 different URLs (e.g., different pages on the same domain). But if we have multiple links to the same page, we can keep only the first and for others remove the anchor or use text citation without link. However, the gate says “Each external URL at most once” – so we must dedupe URLs. We’ll need to look through the article and ensure no href is repeated. We’ll also ensure max 3 per domain. Let’s count: Royal Mail URLs: royalmail.com/find-a-postcode (appears many times), royalmail.com/business/marketing/data/capture (appears at least twice), help.royalmail.com (once), royalmail.com/receiving/change-your-delivery-options (once). That’s multiple domains (royalmail.com and help.royalmail.com) but help.royalmail.com is subdomain of royalmail.com? Possibly considered same domain. We’ll treat as same. So many links to royalmail.com. We need to reduce to at most 3 URLs total? Actually “Max 3 per domain” means we can have up to 3 different URLs from the same domain. That’s fine if we have 3 different pages. But we have many repeats of same URL. So we need to dedupe each unique URL to one occurrence.

    Similarly for Parcelforce: https://www.parcelforce.com/postcode-finder appears multiple times. Smarty: https://www.smarty.com/articles/royal-mail-postcode-finder appears many times.

    We’ll consolidate by keeping the first occurrence of each URL and for subsequent mentions, we’ll either remove the link or change to a text citation (e.g., “according to Smarty”). But the contract requires each claim to have a source anchor. If we remove the link, the claim may not be sourced. However, we can keep the citation as text with the source name, but the hyperlink is not required for every single claim as long as the source is named. The gate says “Every

  • in snapshot cards, key insights, timeline, confirmed-list must have named source anchor.” That means each bullet must have an anchor, not necessarily a link? “Named source anchor” likely means a hyperlink to the source. So we need links. But we can’t repeat URLs. Solution: use different URLs from the same domain if available. For Royal Mail, we have multiple pages: find-a-postcode, capture, help.royalmail.com. We can assign different claims to different pages. But we must ensure the source is accurate. For claims like “Covers all UK addresses” – that is from Smarty article. We can keep that link to Smarty. For “Welsh addresses supported” – from Royal Mail finder page. That’s okay.

    Given the complexity, we’ll systematically go through the article and adjust links to ensure each external URL appears at most once, and each domain gets at most 3 distinct URLs.

    Gate 7: JSON-LD. There are two

  • George Thomas Cooper Clarke

    About the author

    George Thomas Cooper Clarke

    Our desk combines breaking updates with clear and practical explainers.