Cat sitter in London

Hi folks, I'm Elisa, 29, Italian girl. I'm an accountant and I work in an accountancy firm in the heart of the City of London. I love all animals, I have always owned cats, dogs, even hamsters! Unfortunately my beloved cat passed away a couple a years ago and in London I can't own my own pets living in a share house (that's make me sad), but I always look after Pepe, my sister's cat. I know how to look after a cat, how to take care of them (if it is necessary I can administer medication). I thought it would be nice sometimes, in my spare time, to be a cat sitter, in this way I can feel less the missing of pets in my life. Elisa