So sorry for your loss, Paul.
Speaking as someone who is owned by two cats, I know exactly what you are both going through.

After we lost Timmy, my orange Tabby a couple of years ago to a RTA, I now repeatedly tell my partner & his daughters “No more cats!”
However, I have no doubt that there will be others; for us, and maybe even for you too.

Timmy is at rest at the top of the garden, quite close to his favourite sleeping spot under the rhubarb.
To the left is my Mum’s cat, a silver & white Tabby (also called Timmy), and to the left of that grave is Dinky, my second cat.
On the other side of the path lies Freddie, who was a rather bad-tempered black & white shorthair, and to the right of his grave is Charlie-cat, a grey & white shorthair with an incredibly long tail. Charlie-cat got his name from the ragged C-shaped marking on his back. We lost him to FLV.

Thinking of you both.

Don