Cat sitter in London

I am a 25 year old Civil Servant living in the Camden area. Looking for a little extra money and I've always loved cats so I thought this might be a good idea. Growing up I always had cats (amongst a catalogue of other pets) so I am very used to being around them and I'd like to think I'm pretty good with them too. Happy to feed cats, let them out and to change litter trays. Happy to accommodate any special dietary requirements of course. I am fully DBS checked for work.