Semrush Competitor Analysis: The 30-Minute Method

A Semrush competitor analysis is a four-step workflow: identify your real search rivals with Organic Research, find the keywords they rank for and you do not with Keyword Gap, spot the sites linking to them but not to you with Backlink Gap, then sanity-check their scale with Traffic Analytics. Run in that order, the whole exercise takes about 30 minutes and ends with a one-page action plan rather than a pile of spreadsheets. We run this routine at Luckywebs, a London SEO and web agency, and this guide walks it through minute by minute, including the honesty caveats most guides to competitor analysis tools quietly skip.

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What is a Semrush competitor analysis?

A Semrush competitor analysis is the process of using Semrush’s research reports to compare your website against the sites that actually outrank you, so you can copy what works and avoid what does not. It answers three practical questions: who really competes with you in Google, which keywords and backlinks they have that you lack, and roughly how much traffic that advantage is worth. It is the tool-level companion to strategy: our guide to SEO competitor analysis covers the thinking, while this page covers the clicks. Still weighing up the platform itself? Our SEO tools hub and hands-on Semrush review cover features, pricing and alternatives in depth.

Here is the 30-minute plan at a glance:

Minutes	Tool	Question it answers	Output
0 to 5	Organic Research	Who are my real search rivals?	Shortlist of 3 to 4 domains
5 to 15	Keyword Gap	Which keywords am I missing?	10 to 20 target keywords
15 to 20	Backlink Gap	Who links to them but not me?	10 link prospects
20 to 25	Traffic Analytics	How big are they really?	Reality check on priorities
25 to 30	A blank document	What do we do about it?	One-page action plan

What do you need before the clock starts?

Preparation for a Semrush competitor analysis takes two minutes and saves twenty. You need a Semrush account (a free account works for a first pass, though report limits are tight), your own domain, and an honest guess at three to five rivals. Crucially, set the database to the United Kingdom before running anything: Semrush defaults to the US in some views, and US rankings will send a UK business chasing the wrong gaps. Keep a blank document open from the start, because the plan you finish with matters more than any single report. Work through this list first:

• Semrush account created and logged in
• UK database selected in the report toolbar
• Your exact domain to hand (with or without www, match your live site)
• Three to five suspected competitors listed
• Blank document open, titled with today’s date

Minutes 0 to 5: how do you identify your real rivals?

Identifying rivals is the step most people get wrong, because your business competitors and your search competitors are rarely the same list. A Cambridge letting agent competes with other agents on the high street, but in Google it may compete with Rightmove, OpenRent and a dozen advice blogs. Semrush settles this with data:

1. Open Organic Research and enter your domain (UK database).
2. Click the Competitors tab: it lists the domains ranking for the same keywords as your site, with the size of the overlap.
3. Sort by Competition Level, which weighs how many keywords you share against how many each site has.
4. Discard anyone you cannot realistically imitate (national portals, Wikipedia, retail giants).
5. Keep the top three or four domains of a similar size and business model to yours.

Write those names in your document: every remaining step uses this shortlist, so five minutes here decides whether the next twenty five produce a plan or a distraction.

Minutes 5 to 15: how do you run a Keyword Gap analysis?

Keyword Gap is the core of the whole method, which is why it gets a third of the time. The tool compares up to five domains at once (as of July 2026): enter your site first, then your three or four shortlisted rivals, and run it on organic keywords. The report splits everything into named buckets: Shared, Missing, Weak, Strong, Untapped and Unique. Two matter most today. Missing shows keywords where every rival ranks and you do not, which usually means you need a page you have not written. Weak shows keywords where you rank below all of them, which usually means an existing page needs improving. Filter to keywords with meaningful UK volume and a difficulty score you can realistically win, then copy 10 to 20 into your document. If keyword filtering is new to you, our guide to Semrush keyword research explains volume, difficulty and intent from scratch.

Minutes 15 to 20: how do you find missing links with Backlink Gap?

Backlink Gap does for links what Keyword Gap does for rankings. Enter the same five domains, your site first, and Semrush lists every referring domain that links to your rivals. The prize is the overlap: the Best filter surfaces domains pointing to your competitors but not to you, and the ones linking to two or more rivals deserve your attention first. A site that has already linked to three Cambridge letting agents has demonstrated it links to sites like yours, which makes it a far warmer prospect than a cold guess. Skim for relevance rather than raw authority scores, discard obvious directories and spam, and copy ten realistic prospects into your document with a one-line note on why each might link to you (local press, trade association, supplier, guest article). If you have never audited your own profile, start with who links to my website before chasing anyone else’s links.

Minutes 20 to 25: what can Traffic Analytics tell you, and what can it not?

Semrush Traffic Analytics estimates a rival’s total traffic, including channels you cannot see in the SEO reports, and it deserves both five minutes and a health warning. The numbers are modelled from third-party clickstream panels and machine learning, normalised for country, device and demographics: these are estimates, not measurements. The sensible uses are relative ones: is rival A twice our size or ten times, which channels do they lean on, and is their traffic growing or shrinking? Do not quote the absolute figures in a board deck, and expect estimates for small local sites to be the least reliable. Note that Traffic Analytics sits in the separately sold Traffic & Market toolkit, listed at $289 (about £212) a month billed annually as of July 2026; without it you can only view sample domains, not real rivals. The toolkit has its own 7-day free trial, which comfortably covers this exercise; failing that, the traffic estimates inside Organic Research give you a rough organic-only ratio instead.

Minutes 25 to 30: how do you turn findings into actions?

Turning findings into actions is the step that separates analysis from procrastination, and it takes one small table. In your document, convert every shortlisted item into a task with a verb, an owner and a deadline. A finding you cannot phrase as a task gets deleted. The pattern we use with clients is simple:

Finding	Action	Priority
Missing keyword with buying intent	Brief and publish a new page	High
Weak keyword on an existing page	Rewrite, expand, add internal links	High
Referring domain linking to 2+ rivals	Outreach email this week	Medium
Rival growing fast in one channel	Investigate next quarter	Low

Ten tasks is plenty. Diarise a repeat run for next month, because gaps shift as rivals publish.

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What does a worked example look like?

The following is an illustration with invented numbers, not client data. Imagine a Cambridge boiler installation firm running the 30-minute method against three local rivals. Organic Research confirms two suspected rivals and surfaces one it had never heard of. Keyword Gap’s Missing filter shows all three rank for “boiler service cost” style queries while our firm has no servicing page at all: one new page, briefed that afternoon. The Weak filter shows its “new boiler installation” page ranking below every rival, so it gets a rewrite and six internal links. Backlink Gap finds a regional trade directory and a heating supplier’s installer list linking to all three rivals: two emails sent. Traffic Analytics suggests the biggest rival is roughly triple its size, which resets expectations to a 12-month horizon. Competitor-led planning like this is how we helped Circa London lift enquiries by 40 percent.

How accurate is Semrush competitor data?

Semrush competitor data is accurate enough to rank priorities and not accurate enough to quote as fact, and any honest guide should say so plainly. Keyword rankings are crawled and generally reliable, though always spot-check a handful in an incognito window because personalisation and locality shift real results. Search volumes are modelled averages, so treat them as bands rather than exact demand. Traffic Analytics is Semrush’s softest layer: clickstream panels under-represent small UK sites, so a rival showing 2,000 visits could plausibly have 1,200 or 3,500. The discipline that keeps you safe is triangulation: trust direction and ratios from Semrush, and verify your own numbers in Google Search Console, which is measured rather than modelled. This is the same standard we apply in how we test SEO tools. No tool sees a competitor’s analytics; anyone claiming exact rival figures is estimating too, just less openly.

FAQ: Semrush competitor analysis

Do I need a paid Semrush plan for competitor analysis?

Not for a first pass. A free account allows 10 analytics report requests a day (as of July 2026), enough to try Organic Research on one rival, but the full five-domain method will hit that limit quickly. The cheapest paid tier is the SEO plan at $139 (about £102) a month ($117.33, about £86, billed annually) as of July 2026: our Semrush pricing breakdown covers what each tier includes.

How many competitors can I compare at once?

Both Keyword Gap and Backlink Gap compare up to five domains in one report as of July 2026: your site plus four rivals. You can enter root domains, subdomains or individual URLs. In practice three well-chosen rivals beat four careless ones.

Is Traffic Analytics included in every Semrush plan?

No. Traffic Analytics belongs to the separately sold Traffic & Market toolkit, listed at $289 (about £212) a month billed annually as of July 2026, and it can be bought without any SEO plan. Without that subscription you see sample domains only. Take the toolkit’s own 7-day free trial for this workflow, or lean on the organic traffic estimates inside Organic Research instead.

How often should I repeat the 30-minute analysis?

Monthly for competitive niches, quarterly for slower ones. A gap analysis is a snapshot, not a verdict. Rerunning the same five-domain comparison each month shows whether your actions closed the gaps you found, which is the fastest feedback loop in DIY SEO.

What if I do not want to use Semrush?

You have credible options. SE Ranking’s Core plan costs £95 a month (£76 on annual billing) with a 14-day trial and no card required, and Ahrefs starts at £23 a month for Starter and £99 for Lite, all as of July 2026. Our SE Ranking vs Semrush comparison and our roundup of Semrush alternatives cover the trade-offs.

Can Semrush show a competitor’s real Google Analytics numbers?

No tool can. Semrush models estimates from crawled rankings and third-party clickstream data; it has no access to anyone’s analytics account. That is why this method treats every rival figure as a ratio (“three times our size”) rather than a fact.

Does a Semrush free trial cover this workflow?

Yes. The 7-day trial (card required, as of July 2026) lifts the free-tier limits on Organic Research, Keyword Gap and Backlink Gap: ample time to run this method properly. Details and the current offer are in our Semrush free trial guide.