These have come out of some fire logs. They are Oak Longhorn BeetlesPhymatodes testaceus (family Cerambycidae). They vary a lot in colour, and are a common species. The larvae take a year to develop in hardwoods, especially oak, but they do not bore into the wood itself. They dig galleries under the bark, which means they are not able to reinfest the logs and become a household pest if that was your concern. They often come out in houses from stacks of firewood.
Thank you very much. It makes sense as we moved our logs from outside our old house to inside our new one! Yes, I was worried that this old cottage was either infested already or would become so! Thank you for putting my mind at rest.
Ps our cat LOVES scooting the around the wooden floor....hours of fun!