My son asks if I will ever be able to run and play chase

train because she has to look after our children – seven-year-old Alice, who suffers from a genetic disorder, and our sons Bailey, six, and Teddy, 18 months.

Every year I have MRI scans to check the lesions on my spine and brain. They indicate scarring after an attack and they are increasing.

Nancie’s absolutely brilliant. She is still quite young and it’s a lot to put up with.

On my bad days, she takes over with the kids, who know I have bad legs. Bailey will protect me if his pals run towards me, saying: “You mustn’t touch Daddy’s legs.”

Sometimes he asks if I will ever be able to run and play chase. Hearing him say that is horrible.

I was such an active person but I’ve never been able to do these things with Alice and Bailey and I’ll have to explain it to Teddy too.

It is scary to think about the future. My mum was diagnosed 25 years ago and she is now paralysed from the neck down. My dad is her full-time carer.

I can see in my mum what could happen to me. I obviously have low days but I surround myself with my kids and think how lucky I am to have my family. You have to stay positive.

I am a proud man, a family man, and the thought of asking for help nearly stopped me from asking at all. It was a big obstacle. I want to