What species of mouse?

I have some mice living in an underground log pile next to my compost heap. Can someone please tell me which species I have. It will climb onto my hand and be quite happy if I'm gentle with it.

 

Some good id pics here
Types of Mice in the UK - Mouse Identification & Facts - Pest Defence Ltd

 

@ricky101
Very useful website thanks. Looking at the pics on that website, I think it is a field mouse (wood mouse), mainly due to the shape of the eye.

Can anyone more experienced give confirmation or otherwise please.

 

I wouldn't know but I have similar come round my bird feeders.
Really nice little mice and never a problem.

 

@pete
They are supposed to be vermin, but we've had these mice for a year and they haven't been a problem at all. The part of the garden they like has some dense ivy vegetation, a compost heap, log piles and overhead bird feeders continuously dropping seeds. So probably couldn't be more ideal for them. We have 4 small dogs on patrol which I'm sure would go balmy if the mice ever tried to enter the house . Just seen the young one in the pic with its mother, who is twice the size, rummaging through some fresh veg peelings on top of the compost heap. If I sneak up quietly I can watch them for a long time from very close up, but the older ones are much more nervous, and certainly wouldn't tolerate being handled like the little ones. Would probably give me a nasty bite as well . Was hoping to encourage slow worms in the compost heap, but never seen one, so I suppose mice will have to do

 

@Peter Sullivan,

They are nice little critters,..looks like Field Mice,..keep on friendly terms with them they are very interesting to watch and clever as well,..nice to see them in the garden and they will prefer outdoors if somewhere safe is there for them,..i have four Hedgehogs for years and they are now part of the garden,..thankfully they eat Slugs,..your Slow Worms are a great snack

 

I have slow worms on my allotment, not seen any this year yet, I dont think mice would be a match for most of the ones I have seen.
Cats are the biggest problem to wildlife around here.