What is this weed grass?

Loxley

Quite a lot of this coming up in my lawn. It grows annoyingly flat and so is hard to mow. I think it might be poa annua and hopefully not couch grass - any thoughts? 

granma

WillDB  this looks very similar to a grasss which was amongst a pack of mixed ornamental grass.mine has brush type flowers that start off a deep brown and face to a beige.

Loxley

Maybe this one?

Looks like spraying off and returfing is the only way.

LG_

I'm attempting to dig out the worst bits, and will then re-seed. I'm not very optimistic.