Dear Mum and Dad!
I've just arrived to my hotel in London from the Heathrow Airport. I used one of those long, black cabs to get here and although it was really expensive, I enjoyed it. I think London is, indeed, a very beautiful city and there are loads of spectacular buildings, as well as tiny English townhouses. I am going to be visiting the most famous sights tomorrow, the Buckingham Palace and the Palace of Westminster, the British Museum and the London Eye. Probably I'll just walk around the city the day after..
As you know I only have two full days in London and then I'll be taking my way to the North of England, places like Manchester and Liverpool, after those I'll be going up to Scotland.. I wonder if I'll understand their accent..
Love,
[your name]