Over 250,000 Britons visited Sri Lanka in 2018
Britain on Thursday relaxed its travel advice on Sri Lanka after earlier warning against "all but essential travel" following the April terror attacks that claimed more than 250 lives.
"If you're visiting or resident in Sri Lanka, you should continue to remain vigilant and keep up to date with developments," the Foreign Office said on its website.
Tourists were still warned that "terrorists are very likely to try to carry out attacks.
"Attacks could be indiscriminate, including in places visited by foreigners," it said.
Over 250,000 Britons visited Sri Lanka in 2018, making it the third-highest source of tourism behind India and China, with the two countries retaining strong links since Sri Lanka became independent of colonial rule in 1948.
The suicide bombings against three Christian churches and three luxury hotels were blamed on a local jihadi group, the National Thowheeth Jama'ath.
Police say just over 100 people, including 10 women are in custody in connection with the attacks.
Security forces also detained a further 100 suspects in four days of cordon-and-search operations, according to military officials.