Grass with large, short-awned, oval, spikelets on longish pedicels.
No interactions present.
... and not having a book to hand, was Anisantha diandra, but afterwards I realised that the awns were far too short.
Last year I found (Graeme concurring from photographs) two sites for Ceratochloa carinata and one for Bromopsis inermis (and single sites for Anisantha diandra and Ceratochloa cathartica in the next county).
This plant has the arching habit of Ceratochloa carinata, rather than the upright habit of Bromopsis inermis, as observed last year. Perhaps more importantly the awns are about 10mm long, which falls squarely into the middle of the range for Ceratochloa carinata, but is too long for Bromopsis inermis (awns commonly absent, as observed last year, or otherwise up to 3mm, or 6mm in the American vicariant).
Lat/Lng: 53.14661, -2.23529
OS grid ref: SJ843610