The UK's National Cyber Security Centre has been reviewing whether TikTok should be barred from government phones, with the government under pressure from senior MPs to follow the United States and the European Commission in banning the app.
TikTok said bans had been based on "misplaced fears and seemingly driven by wider geopolitics", adding it would be "disappointed by such a move" in the UK.
The UK Parliament closed its TikTok account last August. The Downing Street TikTok page has not been updated since Boris Johnson left office in September last year but others, including Energy Secretary Grant Shapps, have updated their pages more recently.
Labour says five days later, Science Secretary Michelle Donelan said using TikTok was a matter of "personal choice", adding that a ban would be "very forthright".