This little rodent is I think a dormouse which is not in fact a mouse at al the name coming from the Anglo-norman dormeus meaning sleeping one. Dormice can hibernate for uto six months of the year in cold conditions.
this fellow was active and very much awake in early April but it was very pleasantly warm. If I am right in my identification I was very lucky as they are shy and difficult to see creatures. My friend hadn't read the books and posed quite confidently and only scampered off when I had finished a number of shots.