Tomato skin damage

ForTheBees Posts: 168

July 2020 edited July 2020 in Fruit & veg

My mum gave me a pair of tigerella tomatoe plants I've been growing on. The first tomatoes are coming to ripen but at the same time they all seem to be developing problems on the skin. What's the likely cause of this?

Image: https://us.v-cdn.net/6030279/uploads/editor/jp/57eu0ftqlaw9.jpg

Thanks,
Paul