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As of February 2026, the United Kingdom had **** million Facebook users. This figure marked a ****percent increase compared with the same month in the previous year.

Facebook remains the leading social network

Despite a recent history of controversies and user privacy breaches - not least of which being the Cambridge Analytica scandal of 2018 - Facebook has managed to remain the top social network in the UK. As of July 2024, the platform had a **** percent market share, almost six times over that of X, formerly known as Twitter. Besides being the most popular social network across all age groups, Facebook and its subsidiary WhatsApp report the highest use among those aged between 26 and 35 years old.

Role in political advertising

Facebook has also proved to be a lucrative advertising platform, having generated **** percent of online ad revenue in the UK in 2018. This was forecast to increase to ** percent in 2021, placing the social network second to Google within the online advertising sector. Unsurprisingly, political groups aiming to capitalize on this reach have taken to large-scale advertising on Facebook. In 2019, **** million euros was spent on targeted political advertising in the UK alone, the second-highest reported figure in Europe.