Mid century chair?  

Danish
Would be my guess.

Age?
Thanks,would I be right in guessing they were later than the 60's?

Moller chairs have a seat in...
Moller chairs have a seat in that style.

Eva chairs by Koefoeds...
Eva chairs by Koefoeds Hornslet ?

Difficult to tell
from the photo ..the Koefoeds chairs have a seemingly more tapered back than it appears in the pic, and a different top rail, but the splats look similar

thanks again
Thank you all,as the legs aren't rounded and the tops aren't the same I reckon these are Koefoeds Hornslet knock offs,nice as they are...cheers

I much prefer yours Graeme,...
I much prefer yours Graeme, I think they look finer and the seats are way nicer.

staples
thanks,the seats are stapled on not woven,does this make a difference to the aesthetic niceness of the chairs?

I have less than zero...
I have less than zero experience with Danish furniture and woven seats so Im the wrong person to answer but from the photo they look nice though Im guessing they would tear the ring piece off you if you spent all night at a dinner party sitting in one.

generic chairs
i have only ever seen the chair in the Uk which to me indicates a chair that has been ordered from companies in the 50-60 just for the Uk market but produced in denmark.
The chair is fine although the cording on the flat side rails and front rails is near on impossible to get tight as the flat face will not let you put tension in the cord!
Repaired many chairs over the years, where the side rail joins the back and front leg, becomes loose or breaks due to poor dowel fixture.

appreciated
many thanks simon and killian