Continued to feed the cat who's taken up residency in the summer house, door slightly open, but flap to be installed.
After posting locally a 'lady' did come round & said it was hers, male, neutered, chipped & called Rio but didn't want it back! Attempts to trap previously with no success until yesterday after it became apparent that 'it' was more than likely in heat, having spent three days, agitated & calling non stop around the clock.
So having caught it took it to a lady who works with the local feral & stray population here on the Island, in attempting to remove from the cage it was obviously feral, did it fight, up the wall, biting & scratching, no chip could be found in the melee & although difficult to be certain with a long coat, female.
Today was spayed, micro chipped with my details, named Freya & released back in the garden, according to the lady from rescue she's a Maine Coon & would not have tolerated containment so better released. She's eaten & biscuits, water & tuna available for her in the summer house, just hope that she'll settle, it's taken 6 months for her to stop spitting!
All the Best for the New Year.