Cat sitting in Leicester

I'm from Turkey, so my country is almost a cat country. You can see a little head coming out from everywhere. I am currently on a break from work, so I'd like to use this time to help people care for their cats.

I like to give cats treats in moderation, as I don't want them to go over their diets. I play with them, if they let me cuddle them, but I don't like to over-touch them, as it makes some of them uncomfortable. I have been cat-sitting for my friend's cat for over 2 years when she is on holiday or too busy at work to be out longer. I like to spend time with them, but after their cuddle and play time, I let them enjoy themselves. Bear in mind, I haven't administered medication before.