The UK Social Media Platform Statistics in 2021

Since 2004, Social Media has been growing exponentially and as of January 2021, there were 4.2 billion social media users equating to about 52% of the Global Population. This brought people and businesses closer while significantly improved communication between them. In the UK, social media ad spending is projected to reach £5.2 billion in 2021 and increase to £6.5b by 2025.

In today’s blog, I would like to share key facts and insights on the most popular social media platforms. These statistics will help to identify which social media sites are the most effective for your social media marketing strategy.


  • Facebook is the most popular social network in the UK with over 51 million active users.
  • 48% of users are male and 52% female
  • Facebook engagement in the UK is relatively high with the average user clicking on 18 ads and posting 8 comments per month
  • 25 to 34-year-olds are the largest age group (11.2 million users) using the platform
  • The highest traffic occurs between 1-3 pm, however, more engagement occurs between 7-8 pm


  • Instagram has 30.6 million active users.
  • Platform users are predominantly female (56%)
  • The platform is more popular among the younger generation with 75% of 18-24-year-olds and 57% of 25-30-year-olds active on Instagram.
  • Only 8% of people over 65’s used the platform


  • There are 16.7 million active Twitter users in the UK, which equates to about 29% of the population aged 13+
  • Twitter’s users are predominantly male (60%)
  • The share of users accessing the platform on a mobile device is high (80%) when compared to other platforms. 93% of Twitter video views are on mobile devices
  • Year-on-Year, the total ad engagement rate was up 91%
  • Users spend 26% more time viewing ads when compared to other platforms
  • GIFs are particularly effective. Tweets with GIFs gain +55% more engagement.


  • There are 31 million active Linkedin users in the UK
  • Linkedin users are predominantly male (58%)
  • The largest age group using the platform was 25 to 34-year-olds
  • The visitor-to-lead generation ratio is the highest of all the platforms, even higher than Facebook (3:1)
  • The most (80%) B2B leads are generated from LinkedIn

Using the right platform helps to target the right audience and meet marketing KPIs.

Contact Immediate Future today to learn more about these platforms and define your social marketing strategy.

Latest Posts

You may have planning hats on for early 2024 – but before you put that plan in action to wind away the weeks before Christmas, read these 5 tips for your next B2B social campaign! Consider them as B2B social solutions. You may have caught our latest…
Read More
Staying updated on the ever-evolving social media world can be challenging. Here are the latest highlights: X announces the return of post deadlines X introduces the reinstatement of post headlines within in-stream link previews. In October, X made the decision to remove post headlines and preview text, altering how publications…
Read More
In Social Media, organic efforts can only take you so far. While they are vital, the secret sauce to elevate your brand's social presence lies in embracing the dynamic duo of organic and paid social ads. Why? Because the two work better together!
Read More