Please Help Me Identify This Ant Species

Hello my name is George and If you can then please identify this ant species. I live in the UK and I found these ants in my backgarden. Luckily I managed to get the queen and around 100-200 workers so I decided to setup a home for them. The thing is I have all of these ants and I do not know what species they are. I think that they might be Myrmica Rubra but I would like to ask the experts. I will link some pictures of the ants www.picturepaste.ca/image/an...ontainer.HbBS6

www.picturepaste.ca/image/ants-in-nest.HbUId