Italy is to require all visitors from the UK to quarantine for five days on arrival from Monday.
Health minister Roberto Speranza confirmed the move in a Facebook post on Friday as concerns grow over the spread of the Covid-19 Delta variant.
Italy was known to be considering making such a move and becoming the latest to impose restrictions. The Netherlands introduced mandatory quarantine for UK arrivals from Tuesday, and Germany, Austria and France already have restrictions in place.
Speranza said the imposition of restrictions for UK travellers would coincide with the easing of curbs for visitors from the US, Canada, Japan and other EU states if they have a green pass showing they are vaccinated or recently tested negative, Reuters reported.