Relief!

After 3 days I tried a different tactic of going to feed the cats later in the evening and at last Big Grey arrived. A bit shy ( very old)  but coaxed in and soon became more friendly. The younger one wasn't about today but had followed me to and from my house earlier so no worries there! 
Hospital visit tonight. Youngest now in the bungalow most of the time and seemed quite settled although very very tired.