Fern for ID please

Fern for ID please

Observation - Fern for ID please - UK and Ireland. Description: This fern is seriously upsetting my equilibrium. It is not a male fern and it is not broad buckler. It has been here all winter and I have never seen it before. It is growing by one of the entrances to my main badger sett. I spend loads of time with my ba

This fern is seriously upsetting my equilibrium. It is not a male fern and it is not broad buckler. It has been here all winter and I have never seen it before. It is growing by one of the entrances to my main badger sett. I spend loads of time with my badgers, I don't ask questions about them because I know what they are but I can't understand not noticing the ferns, there are three of them. What am I missing? It caught my eye today because in decline it is absolutely beautiful and so I suppose it reminded me of myself. Thanks for looking.