Hi Aneta
A few suggestions to make it sound more natural:
The West End is an area of shopping and entertainment,
the heart of
London's nightlife. There is the seat of Government and the
Houses of Parliament, the Royal Palace and an important museum
here. The airport is located in the East End,
whereas the Bank of England and London Stock Exchange are in the City*. I think that the most comprehensive of these areas is the West End.
* I like your choice of the word 'whereas' here to indicate a contradiction, but in English the contradiction in this case (when using 'whereas') should be in the same sentence. That is why my suggestion would be to combine the two sentences, even though they are separate in the original text.
If you agree, could you edit and leave a message?
If you don't agree, please let me know.
Thank you!