Potatoe problem - brown spots!

HI

A couple of weeks ago my potatoes started to get brown spots, they are now spreading throughout the crop, it stated in the dry weather so I'm sure it isn't blight?

Any ideas?

Thanks

Could be just magnesium defficiency but a photo would help, as would your location.

Useful site here for those either with, or hoping to develop spud hypochondria!

Not suggesting for a moment you are such a person dmhain - yours looks very much like picture 161 (magnesium deficiency) which should be easily cured by watering with a solution of epsom salts (won't hurt even if it's the wrong diagnosis but don't overdo it.)

Brilliant, I will get out to boots as soon as the rain stops 

Many thanks