Help needed with grass ID

Help needed with grass ID

Observation - Help needed with grass ID - UK and Ireland. Description: Common grass here, grows in clumps in roadside/track verges and grassland. Flowering stems up to 1 m, ligule very small and ragged, no auricle visible, awn attached to back of lemma, spikelets one flowered (I think). Having trouble with ID using the key

Common grass here, grows in clumps in roadside/track verges and grassland. Flowering stems up to 1 m, ligule very small and ragged, no auricle visible, awn attached to back of lemma, spikelets one flowered (I think).
Having trouble with ID using the key in my grass guide book.