In the UK, one of the best platforms to use that you can find new potential customers on is LinkedIn, especially if your niche, product or service relies upon sales to the professionals. If you are looking for direct sales to professional companies, or something even more specific such as accountants, lawyers and the such, then LinkedIn adverts can be some of the most cost-effective and easy to set up around the web.
LinkedIn ads are so cheap right now because they are generally not being as used as much as Google Ads or Facebook Ads. The benefit to FB ads over LI ads is that you can be a lot more creative with the copy that you put within the advert. To the videos and images or pure text with logo forms, there are so many different options with the Facebook adverts that you could use to promote your business that just is not available for other options.
However, LI has the distinct benefit of being able to target so many working professionals that you would want to target against the random audience that you might also experience with Facebook. LinkedIn has the specific advantage of being able to target those who are of a higher working salary, and that is beneficial if that is your target audience.
LinkedIn adverts are very good at targeting specific audiences, which is no longer available on a lot of advert platforms. Sine the audience targeting had to be somewhat dumbed down due to legal issues regarding the keeping of personal information, many of the advert platforms had to begin taking down many of the cookies that they use that allowed the targeting to begin with. Since LinkedIn is focused solely on job titles, it takes that position away.
That is why LinkedIn is still an effective tool for adverts.