I would recommend this chemist's with pharmacy (302-306 regents Street) above all other chemist's as the staff are all friendly, helpful and go out of their way to help you find what you are looking for.
As for the pharmacy staff, they are extremely helpful, kind, knowledgeable and are a credit to their chosen profession.
The staff from the pharmacist to their assistants, and counter staff are discreet caring and always give good advice.
I think this is probably the best chemist's pharmacy in London.
Boots is a chain of chemists offering a wide range of general health and hygiene items as well as providing cosmetics, toiletries and medicines. They also sell camera film, travel essentials and a selection of sweets and snacks.