He will complete the 850-mile challenge by cycling for 14 consecutive days in August.

“It feels like the perfect opportunity to do something good, before my health gets worse. To raise awareness, hopefully raise some money and show that this illness shouldn’t define a person. It certainly won’t define me or hold me back,” he said.

Kidneys failed as a baby

The response so far has been overwhelming. ”It’s unbelievable how much interest this has generated. I can’t thank people enough for their generosity so far - their support is a huge boost for the challenge ahead.”

When Jack was 10 days old his kidneys failed, which was a shock to his parents as nothing had been detected during his mum’s pregnancy. It was touch and go as to whether he would survive.

Jack had surgery and throughout his childhood was in and out of hospital, suffering infection after infection whilst on a variety of different medication.

His condition thankfully stabilised but as he got older, his consultant told him his kidneys were slowly deteriorating by a tiny amount each year, and at some point, he would probably need a pre-emptive transplant to avoid the need for dialysis.

However, in February this year, his kidney function suddenly plummeted, and his protein levels – the way doctors can recognise failing kidneys - went off the charts.

“I’ve always been relatively healthy, eat well, don’t drink or smoke, plus I was exercising more, especially throughout lockdown, so it was a bit of a mystery as to why it had dropped so much.