Here are two pix of the cats in their cages as we travelled. They were mostly very calm, and if there was a spat I used a Feliway spray and it seemed to work. I started Dushka in her own carrier but she seemed upset so I put her in with the boys and there was no more trouble.
Ellie and Persil
Dushka, Wellington and Napoleon
Ellie and Persil
Dushka, Wellington and Napoleon