Last Updated on July 16, 2026
LinkedIn now has more than 37 million UK professionals on it. If you sell to other businesses, that is the biggest room in the country. Most owners walk into it and do the one thing that costs the most and works the least.
What happened
LinkedIn has crossed 37 million UK members. B2B marketers keep rating it their most effective channel for thought leadership, with around 76% naming it number one.
At the same time a quieter shift is happening in how the ads work. The format winning right now is not the polished company advert. It is the sponsored post from a real person.
Why it matters to you
Here is the part that should make you sit up. Promoting a real person’s post, what LinkedIn calls a Thought Leader Ad, runs at roughly £3.31 per click. A standard brand awareness ad runs closer to £18.03.
That is the same platform, the same audience, at a fraction of the cost. The person just trusts a face and a useful point more than a logo and a slogan. It is the same lesson as our piece on Meta overtaking Google in ad revenue: stop defaulting to the obvious, expensive option.
The mistake most businesses make
The mistake is to treat LinkedIn like a billboard. You build a company page, boost a glossy advert about how passionate you are, and wonder why the leads do not come.
People do not want to be marketed at on LinkedIn. They want to learn something from someone who clearly knows their job.
What to do instead
Start: pick one real voice. Usually the founder or the person who actually does the work. Not the logo.
Build: post useful things consistently. Answer the questions your customers ask. Share what went wrong and what you learned. Plain text, no jargon, no hype. Do this for a few weeks before you spend a penny. Watch your marketing costs as you go.
Scale: put a small budget behind the posts that already landed. Promote the real post that got comments, not a fresh advert. That is where the £3.31 clicks live.
The takeaway
LinkedIn rewards being useful and human, and it charges you less for it. The cheapest way into the biggest B2B room in Britain is a real person saying something worth reading. Be that, then amplify it.
Frequently asked questions
How big is LinkedIn in the UK?
More than 37 million professionals are on LinkedIn in the UK.
What is a Thought Leader Ad?
It is a sponsored version of a real person’s organic post, rather than a company advert. It tends to cost far less per click, around £3.31 against £18.03 for a brand awareness ad.
Do I need a budget to start?
No. Post useful content from a real account first, then put money behind what already works.
