Google Ads can put your business at the top of Google within hours. It can also spend your budget on clicks that never turn into customers. The difference is almost always in the setup, not in luck.
This guide walks through how a UK small business can start with Google Ads in a way that is measurable, controlled and, ideally, profitable.
Before you spend a penny: decide what a customer is worth
Work out two numbers:
- Average value of a customer — the profit from a typical first order or job, and ideally over the customer’s lifetime.
- Maximum you can afford to pay to win one — your target cost per acquisition (CPA).
If a new customer for a boiler service is worth £150 in profit and you are happy to pay up to £50 to win one, your campaigns need to produce customers at or below £50. Every decision after this point — keywords, bids, budgets — is in service of that number.
Step 1: Conversion tracking
Conversion tracking tells Google Ads (and you) which clicks led to something valuable. Without it, Google optimises for clicks, and you have no idea what is working.
Track the actions that matter to your business:
- Form submissions (enquiry, quote request, booking).
- Phone calls from ads and calls from your website.
- Purchases with revenue, for e-commerce.
- Bookings through your booking system.
Use Google Tag Manager and Google Analytics 4 (GA4), or the Google Ads tag directly, and test every conversion before launching. Make sure your cookie consent banner is set up correctly for UK and EU privacy rules, and use consent mode so measurement still works where people decline cookies.
Step 2: Choose the right campaign type
Google Ads offers several campaign types. For most small businesses starting out:
| Campaign type | Best for | Watch out for |
|---|---|---|
| Search | Service businesses and anyone people search for by need | Needs careful keyword and negative keyword management |
| Shopping | E-commerce with a product feed in Merchant Center | Feed quality decides performance |
| Performance Max | E-commerce and businesses with solid conversion data | Less control and transparency; can drift into low-quality placements |
| Display / Demand Gen | Remarketing and awareness | Rarely the best first campaign for direct leads |
| YouTube / Video | Brand building and remarketing | Harder to tie directly to leads |
If you sell a service, start with Search. If you sell products online, start with Shopping or a well-configured Performance Max, alongside a branded Search campaign.
Step 3: Keywords that show intent
The best keywords describe someone who is ready to act.
- High intent: “emergency electrician Croydon”, “book physiotherapist Clapham”, “kitchen fitters near me”.
- Lower intent: “how to rewire a house”, “kitchen ideas”, “what does a physiotherapist do”.
Start with a small number of tightly themed ad groups, each with a handful of closely related keywords. Use phrase match and exact match to keep control early on; broad match can work later when you have strong conversion data.
Negative keywords from day one
Negative keywords stop your ads showing for irrelevant searches. Common negatives for service businesses include:
- jobs, careers, salary, apprenticeship
- free, DIY, how to, course, training
- second hand, cheap (if you are premium), wholesale
- competitor-specific terms you don’t want, locations you don’t serve
Review the search terms report every week and add new negatives. This is one of the highest-return habits in Google Ads.
Step 4: Location and schedule targeting
- Locations: target only the areas you serve — by borough, postcode, radius or city. In London, cost per click can vary a lot by area, so separate campaigns or bid adjustments can help.
- Location option: choose “Presence: people in or regularly in your targeted locations” rather than people merely interested in them, unless you sell to visitors.
- Ad schedule: if you can only answer calls 8am–6pm, consider limiting call-focused ads to those hours.
Step 5: Ads that match the search
Responsive Search Ads let you write multiple headlines and descriptions. Good ads:
- Repeat the service and location the person searched.
- Give a reason to choose you: experience, reviews, guarantees you actually offer, speed, price transparency.
- Include a clear next step: “Get a free quote”, “Book today”, “Call now”.
Add assets (formerly extensions): sitelinks, callouts, call asset, location asset linked to your Google Business Profile, and structured snippets. They make ads bigger and more useful.
Step 6: Landing pages that convert
Sending ad traffic to your homepage is one of the most common causes of wasted spend. Each ad group should point to a page that:
- Matches the keyword and ad — the same service, the same promise.
- Loads fast on mobile.
- Shows trust signals: reviews, photos of real work, accreditations.
- Has one obvious action — call, form or booking — visible without scrolling.
- Answers the main objections: price guidance, timing, coverage area.
Improving the landing page often lowers cost per lead more than any change inside Google Ads.
Step 7: Budget and bidding
- Start with enough budget to gather data — a campaign that gets a handful of clicks a week takes months to learn anything.
- Bidding: begin with Maximise Clicks with a bid cap or Manual CPC to control costs, then move to Maximise Conversions or Target CPA once you have consistent conversions recorded.
- Don’t spread thin: one well-funded campaign beats five starved ones.
Step 8: Weekly optimisation routine
- Check spend, conversions and cost per conversion against target.
- Review search terms; add negatives; add new exact-match keywords that convert.
- Pause keywords and ads that spend without converting.
- Test new headlines against the current best.
- Check landing page speed and form/call tracking still work.
Monthly, step back and ask: is this channel producing customers at a profit? If not, what is the bottleneck — targeting, ads, landing page, or the offer itself?
Common mistakes
- Launching without conversion tracking.
- Broad match keywords with no negatives on a small budget.
- Targeting all of the UK when you serve one city.
- Sending everyone to the homepage.
- Judging success on clicks or impressions.
- Running ads from an account you don’t own.
How Hidook helps
Hidook manages Google Ads for businesses in London, across the UK and in Ireland. We start with tracking, build tight Search and Shopping campaigns, create landing pages when the ad isn’t the problem, and report on leads and sales in plain English. Accounts are always set up in your name. Book a free discovery call for an honest look at your current or planned account.