As per article published in MSN following countries changed their visa policy to attract tourism.
Azerbaijan
Recently, Azerbaijan changed visa policy, getting a visa to visit the country was a long and torturous process with no guarantee of success. Then the authorities surprised us by introducing an electronic visa.
as per new visa policy the whole process of getting a visa to Azerbaijan is simplified. Everything is done online and the visa is issued after only 2-4 days. The fees are significantly lower too. These days it costs a measly $20.
Cambodia
Cambodia making the process simpler and faster. The application only takes 2-3 days and the visa is emailed to you once it’s issued.Crossing into the country from Vietnam, Laos or Thailand? Not a problem. Cambodian visas can be obtained on arrival at most major border crossings.
Sri Lankan
Simply fill in an online form and press 'Enter'. Your Sri Lankan E-Visa will generally be issued within 24 hours, without hassles, interviews or letters.
Tajikistan
Tajikistan introduced an E-visa, simplifying the application process to the point where you can submit your application online with just a copy of your passport. The visa is issued in 1-3 days. All you have to do is print it out and take it with you on your trip. Simple and easy, exactly as it should be.
Vietnam
Visa not required for UK citizens travelling to Vietnam for under 15 days don't need a visa at all. Simply turn up and you’ll be issued an entry stamp on the spot.Planning to stay in Vietnam a little longer? Visitors who plan to explore the country for up to 30 days can apply for an electronic visa. The processing time is only 1-2 days and the whole process is done online.