Half of cow meat in UK comes from used dairy cows. Every dairy cow has to give birth 8-12 times and over half of those born calfs are boys. As they are no use otherwise, they get slaughtered immediately after they are born for their tender meat. By eating diary of any kind you're doing as much harm to animals as you'd by directly buying steak. You're also doing more harm to your body as quality meat is better for health (still bad) than cheese.