AN urgent campaign launched to help a little girl battling a rare form of cancer has been gathering pace.

More than £20,000 has already been raised for Niamh’s Fund since its launch at the beginning of July.

Niamh Storey-Davidson, eight, from Preston Park, Brighton, has almost exhausted all the treatments available to her in Britain.

Her best hope is to take part in trials being developed abroad but these are expensive and her family need to make sure they have the money before signing up.

Niamh was diagnosed with a Wilms’ tumour in 2012 after doctors discovered a lump the size of a rugby ball on her left kidney.

She has had more than 70 weeks of chemotherapy, three major operations, a stem cell transplant and radiotherapy but the cancer returned earlier this year.

Her parents, Gilli and Adam, are in talks with centres in America and Britain to keep up with the latest drug trials and developments while trying to raise the money needed.

Friends, family and Niamh’s classmates have thrown their support behind the campaign by holding fundraising and awareness events.

The latest was an end-of-term party in Preston Park on Wednesday, which attracted scores of pupils from Balfour Primary School, which Niamh attends, plus many friends and relatives.

Niamh and her family were also at the event.

The family are also supporting the work of Bethany’s Wish, the only Wilms’ tumour charity in the UK.

Any funds not used for Niamh’s treatment will go towards research into relapsed cases.

To support the appeal, visit uk.virginmoneygiving.com/team/NiamhsFund