We have just returned from the vets. All went well and the kittens are fine. Hugo's sister didn't like the journey at all (40 mins one way) Hugo (Big Mike/Ivan) did the sweetest thing, he gently put his head on his sister's back, closed his eyes and stayed calm. It was like he was giving her a comforting hug. When ever she cried he just nuzzled his head ever so slightly deeper into her fur as though to offer reassurance. It was the sweetest thing ever.