TikTok reaches around 24.9 million adults in the UK, roughly 136 million in the US and 10.2 million in Australia. That’s somewhere between a third and two-fifths of the adult population in each of those markets. The audience sits mainly in early- to mid-career stages, and because the For You Page hands out reach based on interest rather than follower count, a brand-new account can get in front of thousands of people. For recruitment, search and staffing businesses, the honest answer is that TikTok is a candidate channel, not a client one. There’s no sourced example of a recruitment business winning new client work through TikTok, and no verified UK, US, or Australia return-on-investment benchmark for the sector. The people who sign off recruitment spend aren’t concentrated on the platform. So if you hire at volume for entry- to mid-level roles, it’s worth testing with a small, defined budget of around 300 to 500 pounds over a fortnight, measuring your own cost per lead rather than relying on anyone else’s numbers. If you’re targeting senior or executive people, put that time into LinkedIn, your email list, and direct outreach instead. This post covers the audience data, what the algorithm rewards in 2026, what a test costs in time and money, and four questions to help you decide either way. What You Will Learn in This Post Who’s really on TikTok in the UK, the US and Australia, and what those numbers mean for the roles you fill Why the change of ownership in January 2026 removes the one objection that stopped a lot of recruiters from looking at the platform at all What the algorithm rewards now, and why a brand new account with no followers can still get real reach Why TikTok can get you candidates but there’s no evidence it will get you clients The difference between attracting candidates and winning clients, and why mixing the two up costs you money What a proper test costs in time and money, and four questions that’ll tell you whether to run one at all I know what some of you are thinking. TikTok is for dancing. It’s not for a serious recruitment business. My clients aren’t on there. Some of you will be right about that. And I want to say up front, you have my permission to walk away from this one. Not every channel is for every company, and part of my job is helping you say no with confidence rather than adding another thing to a list you’re already struggling to get through. But it’s a fair question, so let’s answer it properly. Here’s where I’ve landed after going through the research. TikTok can get you candidates. I couldn’t find any evidence that it will get you clients. That’s the short version. The rest of this post is why, and what you should do about it. What Changed in 2026 Let me start with what’s shifted, because if you looked at TikTok a year or two ago and backed away, your reason might not apply anymore. TikTok is a short-form video app owned by the Chinese technology company ByteDance. It launched internationally in September 2017. In January 2026, its US operations were sold to a new, majority American-owned entity called TikTok USDS Joint Venture LLC, led by Oracle, Silver Lake and Abu Dhabi’s MGX. They hold 80.1 per cent between them, with ByteDance keeping 19.9 per cent. The deal closed on 22 and 23 January 2026. Why does that matter to you? Because for years, the objection I heard most about TikTok had nothing to do with the audience. It was the risk that the whole thing might disappear overnight in the US. Hard to build a plan on that. That question has now been answered. I’ll be straight with you, though. Some legal commentators, including at Harvard Law School, argue the data and influence questions haven’t been fully settled. So not every concern is gone. It’s that the one that made planning impossible has. If you parked TikTok because of that, it’s worth another look. Who’s Really on TikTok in Your Market These are TikTok’s own advertising reach estimates for adults, which are the most current, source-dated data available. UK: around 24.9 million adults, roughly 36 per cent of the population US: around 136 million adults, roughly 39 per cent. Estimates vary between sources from 136 million up to 153 million, so treat it as a range Australia: around 10.2 million adults, roughly 37.5 per cent So in all three of the markets most of you work in, somewhere between a third and two-fifths of the adult population is reachable on this platform. That isn’t a niche. Which is why it’s worth making a proper decision about, rather than dismissing it because of what you assume is on there. Now, the make-up of that audience is what matters for you. In the UK, TikTok’s adult audience is around 62 per cent female, which is a big difference from the global picture. The largest UK segments are 25 to 34, at around 29 per cent, and 35 to 44, at around 23 per cent. In Australia, the gender split is close to even, and the 25 to 34 group is the biggest single segment at around 48 per cent. Globally, around two thirds of adult users sit in the 18 to 34 bracket, with about 8 per cent aged 55 and over. What does that mean in practice? TikTok’s built-in audience sits mainly in early to mid-career stages. It’s not where you’ll find a concentration of senior hiring decision-makers, board-level people or business owners. They’re on LinkedIn, and we covered that channel in a previous episode. One more thing if you work in the Australian market. The under-16 social media ban came in during December 2025 and applies to TikTok, which has pushed the active base further towards adults. For reaching early career professionals in Australia, that makes it slightly more relevant, not less. How the Algorithm Works, and Why It Matters to a Small Business TikTok doesn’t work like LinkedIn or Facebook, and this is where people get caught out. On most platforms, your content goes to your followers first. If you’ve got fifty followers, you reach fifty people. TikTok hands out reach through the For You Page, which works on interest rather than your follower list. That means a brand-new account with nobody following it can get in front of thousands of people if the content works. Please sit with that for a second, because it’s rare. On almost every other platform, you have to build an audience before you get reach. Here you don’t. For a small recruitment or search business starting from nothing, that’s the strongest argument for testing this channel. In 2026, the algorithm has moved further towards rewarding completion rate, rewatches and total watch time. Not likes. Not follower count. Whether people watch your video to the end, and whether they go back and watch it again. TikTok tests each video on a small sample first, then decides whether to push it wider. There’s a second shift worth knowing about. People increasingly use TikTok as a search engine, typing questions into it the way they’d type them into Google. For a recruiter, that’s useful, because content answering real questions- what a role pays, what the interview process looks like, how to move into a sector- keeps working long after a trend has died. On frequency, general guidance is one to four organic posts a week, with newer accounts sometimes benefiting from a few more while they build momentum. On engagement, the estimates vary depending on who you read. One 2025 study puts TikTok at 4.86 per cent, another gives a median of 1.73 per cent, and a third gives 3.7 per cent. Different methodologies so that I wouldn’t build a business case on any single one. What they all agree on is that TikTok beats Instagram, Facebook and X on average engagement. Why TikTok Won’t Get You, Clients Now for the part I really want you to take away, and I’d rather you heard it from me than found out three months into a content plan. When I went through the research for this episode, I was looking for one specific thing. A recruitment or search business that had won client work through TikTok. A PSL, a retained brief, an exclusive assignment. Something that started because a hiring manager saw them on the platform. I couldn’t find one. Not in the UK, not in the US, not in Australia. There is documented recruitment activity on TikTok, and some of it has real numbers attached. But it’s all candidate attraction and employer branding, and none of it is UK-based, so I’m not going to wave it in front of you as though it tells you something reliable about your market. Does the absence prove it’s never happened? No. But it tells you something, and the audience data explains why. The people who sign off recruitment spend aren’t concentrated on this platform. There’s a second gap worth naming while we’re being honest. There’s no reliable UK, US or Australia benchmark for return on investment on TikTok advertising specific to our sector. So if you go in, go in as a test with a defined budget and measure it yourself. Attracting Candidates and Winning Clients Are Two Different Jobs This is the bit that sits underneath everything else, and it costs recruitment business owners real money. We talk about recruitment marketing as though it’s one thing. It isn’t. It’s two jobs. One is attracting candidates. Getting people to apply, building an employer brand, filling your talent pool. The other is winning clients. Getting in front of hiring companies, starting conversations with decision-makers, landing briefs and retainers. Different people. Different messages. Different channels. And a channel can be brilliant at one and useless at the other. Why does this matter so much? Because you can spend six months posting away, watching the views come in, feeling like your marketing is finally working, and then wonder why your client pipeline hasn’t moved an inch. It hasn’t moved because you were doing the other job. 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