Whilst it is your responsibility to check whether you need a visa to enter your destination country, it may help to know that British citizens currently require visas for Canada, China, Libya, Indonesia, Jordan, Kenya, South Korea, Vietnam, Australia, America, India, Cambodia, Papua New Guinea, Egypt and Cuba. This list is not exhaustive and rules may change at any time. Please be aware that visas can take time to arrive and its wise to make your application as soon as you know you need one to avoid undue stress.