Carex otrubae False Fox-sedge CC DD N
This is usually quite a large and common sedge growing in wet or boggy places and it is quite hard to get a decent photograph of the whole plant as it tends to blend with its usually grassy background. The fruits always look very spiky like the one in the photo and can be 3 to 5 cm long or more.
This is a very common sedge in England, most of Ireland and north and south Wales but in Scotland it is much more likely to be found near the coast.