If you are looking for something better than a drug store facial cleanser I would recommend the ones from the BIODERMA range. They are usually available in pharmacies etc. These are from a series of dermatologically tested products and come in three categories
-Blue one for hydration of skin which is usually dry etc.
-Red one for sensitive skin
-Green one for skins with greasy/oily tendencies.
The pricing varies from store to store, country to country and from product to product.
Rough estimation: 6-10 pounds .