This one took some tracking down.
The artist is Kay Cathcart, listed merely as "20th century British" with no other biographical details.
The paintings in the sales records (only two) were harbor scenes in Torbay in Cornwall, so I presume that's where he/she lived and worked although this landscape looks like it could be north Wales or the Highlands as it's too bleak, tree-less and mountainous to be anywhere in England. It reminds me of the Cuillins on the Isle of Skye, but the cottages are wrong, most of those are one story and not clustered like this, though possibly artistic license.
Judging by the brushwork, I would describe the artist as a self-taught hobby painter, though I do think this attempt at a moonscape almost works. Perhaps a "dusk scape" would be better as there's just too much warmth in that late summer hayfield to be moonlit.
As for value, we are looking at decorative appeal only for this one, as there's no collector following for this name, and unframed, so not 'wall ready' without some extra time and expense. Therefore perhaps £50 - £120 at auction and £150 replacement/insurance.
Hope this helps!