UK travelers escaping the British winter: Sri Lanka in December–February is your move. Direct flights, 30C heat, and the west coast at its best.
December through March is the sweet spot for UK travelers to Sri Lanka. Direct flights from London to Colombo take about 10.5 hours — that's shorter than Bali or the Maldives, and you land in a country where everyone speaks enough English that you don't spend the first day figuring things out. British Airways and SriLankan Airlines both fly direct. You can find return flights for £500–700 in January if you book early.
The best routes for two weeks: start in Negombo or the Galle Face area of Colombo for a night, head to Kandy and the Cultural Triangle for 4–5 days, then down to the south coast (Galle, Mirissa, Weligama) for the rest. The south and west coasts are in peak season — dry, sunny, 30°C. Perfect beach weather while your friends in London are scraping ice off their cars. Hikkaduwa, Unawatuna, and Mirissa are the main beach bases. All have good hotels and restaurants catering to European tastes without being resort prisons.
The jet lag is manageable — the time difference is only 5.5 hours ahead of the UK. You'll wake up early, which works perfectly for sunrise hikes and morning safaris. The only UK-specific gotcha: bring sunscreen. The Sri Lankan brands are weak compared to Boots factor 50. You'll burn before you feel it.