Most business owners use these two terms loosely, and it costs them. PR and advertising both aim to get your business known, but they work through completely different mechanisms, buy you different things, and suit different situations. Choosing the wrong one – or assuming they’re interchangeable – is how businesses end up spending money on something that was never going to solve their problem. This guide sets out what each actually does, what you give up with each, and how to work out which your business needs right now.

The Core Difference: Bought vs Earned

Everything follows from one distinction:

• Advertising is space you buy. You pay, you control the message, and it appears where and when you decide.
• PR is coverage you earn. You give a journalist, editor, or publication a reason to write about you – and they decide whether to, and what to say.

That’s the whole trade-off in a sentence. Advertising buys control and certainty. PR buys credibility you can’t purchase, at the cost of control. Neither is superior; they’re answering different questions.

The practical consequence people miss: an advert is understood by readers as something you paid to say about yourself. Editorial coverage carries the implicit endorsement of a third party who chose to write it. That difference in perceived credibility is precisely what makes PR valuable – and precisely why you can’t dictate the outcome.

What PR Actually Does

Public relations is the work of getting your business talked about by people who aren’t you – and managing how you’re perceived more broadly.

What it typically involves

• Media relations – building relationships with journalists and getting stories placed
• Press releases and story pitching around genuine news
• Local and trade coverage in publications your audience reads
• Community involvement, events, and sponsorships
• Awards entries and industry recognition
• Reputation management when something goes wrong

Where PR is strongest

• Building credibility that advertising can’t manufacture
• Establishing you as a known, trusted name locally
• Reaching people who tune advertising out entirely
• Supporting a launch, milestone, or genuinely newsworthy moment
• Repairing or protecting reputation

Where PR falls short

• You don’t control the message, the timing, or whether it runs at all
• Results are unpredictable – a great story may get no pickup
• It’s slow, and builds over months rather than weeks
• Attribution is difficult; linking coverage to sales is rarely clean
• You need something genuinely newsworthy, and “we exist” isn’t news

That last point catches a lot of businesses out. PR isn’t a channel you can simply switch on – it needs raw material. If nothing about your business is currently interesting to a journalist, the first job is creating something that is. Our guide to local PR campaigns covers how Glasgow businesses find those angles.

What Advertising Actually Does

Advertising is paid placement – you buy the space, you decide the message, and it appears on your schedule.

What it typically involves

• Paid search and social campaigns
• Outdoor advertising – screens, billboards, transport
• Display and remarketing online
• Print, radio, and local media placements

Where advertising is strongest

• Complete control over message, timing, and audience
• Predictable – you know it will run and roughly who’ll see it
• Fast, particularly with digital channels
• Scalable – spend more on what works
• Measurable, at least in digital formats

Where advertising falls short

• Audiences know it’s paid, so it carries less inherent credibility
• It’s increasingly easy to skip, block, or ignore online
• It stops working the moment you stop paying
• Costs rise as competition increases

Advertising’s honesty about being advertising is both its limitation and its strength – nobody trusts it as much as editorial, but nobody has to approve it either.

Green Flags vs Red Flags

Signs you’re reaching for the right one:

Which Does Your Business Need?

Lean toward PR if

• People haven’t heard of you and credibility is the barrier
• You have genuine news – a launch, expansion, milestone, or local story
• Your market values trust and reputation heavily
• You’re playing a long game rather than needing enquiries this month
• You want to be known in your community, not just seen

Lean toward advertising if

• You need enquiries or sales on a defined timeline
• Your message needs to be exact and consistent
• You want to target a specific audience precisely
• You need results you can measure and adjust
• You have nothing especially newsworthy right now

You probably need both if

• You’re building a business for the long term, not just this quarter
• You want both immediate response and lasting reputation
• You have news worth telling and something to sell alongside it

How They Work Together

The most effective approach usually isn’t choosing. PR builds the credibility that makes your advertising more believable; advertising provides the reach and consistency that PR can’t guarantee. Someone who’s read about your business in a local publication and then sees your ad responds differently from someone seeing the ad cold – the coverage has already done the trust-building work.

A practical sequence: earn coverage where you can, then amplify it. A piece of genuine editorial coverage can be shared, referenced on your site, and pointed to in advertising – which extracts far more value from it than letting it run once and disappear.

Why Glasgow Businesses Choose LightUpp

LightUpp covers both PR and advertising, which is why we can be straight about the difference rather than steering you toward whichever we happen to sell. If your problem is credibility, we’ll say so; if you need enquiries by month-end, PR is the wrong tool and we’ll tell you that too. Because PR, paid advertising, outdoor, social and branding sit with one team, coverage you earn and advertising you buy reinforce each other rather than running as disconnected activity. More at lightupp.co.uk.

Frequently Asked Questions

What’s the main difference between PR and advertising?

Advertising is space you buy, so you control the message completely. PR is coverage you earn, so a third party decides whether to run it and what to say. That difference is why editorial carries more credibility, and why it’s less predictable.

Is PR cheaper than advertising?

Not necessarily, and the comparison is awkward. PR has no media cost but takes considerable time and skill, and there’s no guarantee of coverage. Advertising costs are predictable but ongoing. The better question is which one addresses your actual problem.

Can a small business do PR?

Yes, and local media is often more accessible than owners expect. The requirement is having something genuinely newsworthy – a launch, an expansion, a community story, a milestone. Without a real angle, PR has nothing to work with.

How long does PR take to work?

Longer than advertising. Coverage may take weeks to secure and its effect builds gradually as your name becomes familiar. If you need measurable results within a month, advertising is the more realistic choice.

Related Reading

To go further on both sides:

• PR Agency Glasgow: How Local PR Campaigns Help Businesses Build Trust – how local PR works in practice – https://lightupp.co.uk/pr-agency-glasgow-local-pr-campaigns/
• Advertising in Glasgow: Which Type of Advertising Works Best for Local Businesses? – comparing your paid advertising options – https://lightupp.co.uk/advertising-in-glasgow-which-type-of-advertising-works-best-for-local-businesses/
• The Best Marketing Companies in Glasgow: What to Look for and Who to Trust – choosing a partner for either – https://lightupp.co.uk/the-best-marketing-companies-in-glasgow-what-to-look-for-and-who-to-trust/

Not sure whether you need PR, advertising, or both? We’ll give you a straight answer → lightupp.co.uk