Police walk between football grounds for Millie, 11

Det Sgt Adam McCluskey (right) helped organise a fundraiser for Millie, who was diagnosed with bone cancer on her 11th birthday last year

A group of police officers have covered a 95-mile (153km) route between football stadiums to raise money for an 11-year-old girl diagnosed with osteosarcoma.

Millie was diagnosed with a form of bone cancer last year and had to have her left leg amputated above the knee. Her parents are trying to buy a new artificial leg for her.

A group of 60 people walked from Peterborough United's ground on London Road to the home of Millie's favourite team Chelsea FC, at Stamford Bridge, London.

A colleague of Millie's parents, Det Sgt Adam McCluskey, organised the walk and said the Cambridgeshire Police force had wanted to "help in any way".

So far, Millie has had seven operations, blood transfusions, and spent more than 100 nights in hospital

Millie's parents Gordon and Gemma are both Cambridgeshire Police officers from Peterborough.

They said their daughter had been through a gruelling cycle of chemotherapy and her amputation had been one of the "darkest moments".

She had been a talented horse rider and a promising footballer who played for Oundle Town girls in Northamptonshire, and Peterborough United's Academy.

She had aspired to play for Chelsea women's team.

Family, friends and supporters gathered pitch-side to greet the fundraisers at Stamford Bridge

Det Sgt McCluskey, said: "I've known Gordon and Gemma for some years, and my daughter and Millie are friends.

"When we found out Millie had been diagnosed with bone cancer, it knocked us for six; I just wanted to do my bit to help in any way I could... and so did everyone else in the force.

"Extend a logistical challenge to a bunch of police officers and staff and they'll grasp it with both hands and run with it... and I mean run!

"It might sound cliched, but policing is like a family - we come together to look after each other in times of need, and never more has that been demonstrated than over the past three days."

'Best leg available'

The cost of a specialist leg and rehabilitation is more than £130,000, and the family said they had been told there was no rehabilitation centre specifically for children.

More than £143,000 has been raised and it will now also help pay for Millie's future care needs.

Although she has an artificial leg, Gordon has previously said on the fundraising website: "The NHS can provide prosthetics, but many aren't suitable for someone as active as Millie, and it's likely she will need new parts for her leg as she grows – all of which cost a considerable sum.

"We are still struggling to get the best leg available, as the NHS have stated Millie needs to prove herself on a lesser leg before they will give her the best leg they have that's right for her."

During the fundraiser the group were waved off by a police escort and later passed through Cambridge and Welwyn Garden City on their way through Hertfordshire to the capital.

Millie said: "I know it's been a very hard three days, but I wanted to say a massive thank you to everybody who has taken part.

"Whether you've done a little bit or a big bit, it means so much.

"And thank you to Adam and his brilliant team for making this happen, it really means a lot."