Former British army captain Tom Moore has raised nearly 30 million pounds ($A58 million) to help Britain's health service through the coronavirus pandemic.

Hundreds of thousands of people have donated to Captain Tom's JustGiving fund for National Health Service (NHS) charities after he walked the 25-metre length of his garden 100 times over several days, ahead of his 100th birthday on Thursday.

The man who led a group of contractors in building a fence around Captain Tom's now-famous yard this week has family on the NSW Far South Coast.

James Corbett chatted with the Bega District News about the work, for which he said all materials and labour had been donated "and the family are over the moon".

"He's a hero over here - a lot of people are doing nice things for him," Mr Corbett, of JC Countryside Services said.

"There were nine companies organising and erecting the fence, and two companies supplied materials and another gave us a digger to use.

"We were pretty flat out to try and get it finished in a day. It was a good long run and keeping the social distancing rules made it hard, but was nice.

"He made the time to come and see us, even though there was a lot going on. Tom and his family were so grateful."

Mr Corbett said it was nice to see so many people around the world getting behind Captain Tom's incredible efforts and taking an interest in what we achieving for the UK's National Health Service.

Just recently, images of the 125,000 birthday cards he was sent for his 100^th birthday made news around the world.

"We are all finding the virus horrendous, but it's nice we can all find time to support him. And show gratitude," Mr Corbett said.

"The pictures of the cards he's been sent was amazing to see."

In other Captain Tom news, to celebrate his 100^th birthday, the inspirational WWII veteran was appointed an honorary colonel, the promotion in recognition of his efforts for his country. A train is also being named after him.

He is also the oldest person to have reached the top of Britain's singles charts, last week joining singer and actor Michael Ball and an NHS choir on a version of the 1960s hit "You'll Never Walk Alone".