The top one is a common poppy, the middle one purple toadflax or linaria and the bottom one white campion. They are all pretty and I wouldn't pull them up as they will self seed and the toadflax is extremely popular with bees. I let it run amok in my patch as its very easy to pull up.

yes I agree, all good british natives and excellent for bees butterflies and moths.

Many thanks for your replies. I love them and they will definately be staying.