Great tit or coal tit or?

I have been at home today and been working hard to catch up. But it has meant I can observe the bird station. There are birds around but not the number of before. Still with a baby dunnock yesterday and I think a different tit today (welcome identification?) the variety is still there.

I think I have a cold coming but got so much to do this week so hope it stays away!

A little behind on comments I am afraid but will catch up as soon as I can.