False allegation NYE in England.

Was out for nye in a bar in England with 2 friends. Normal night out went in we was minding our own business. 2 girls came up to us and told us do we want a photo. Agreed and they took a picture. We asked if they wanted one and they said no and we then separated. One of my friends went up to them to try and talk whilst me and another stayed about 1.5m away minding our own business. After about 10 minutes the other friend comes up to us and tells us the girls are accusing one of us two for slapping her on the ass. I was completely confused because we weren’t even near them. We even moved away and they came near us and started dancing again. Up to this point I had a pint so i was still sober. We left the bar and saw them outside, I asked one of them who took the picture to send it to us and delete but she refused. Then the other girl said one of you slapped my ass, I replied when and who and she said “i don’t know my friend said and I’m going to believe her she’s my best pal”. I replied i promise you none of touched you, we weren’t even near you. I even said she can ask security to look through all the cameras. I again asked her to delete the photo and her friend again refused.

I’m quite confused as why they made this up. not sure if I need to be worried or not. It’s the fact they have a picture which is worrying me. Any advice is appreciated..