The Prince of Wales joined hundreds of beneficiaries at Westminster Abbey as the charitable owner of Ansvar Insurance, Benefact Group, celebrated giving more than £100 million ($177 million) to good causes.

Ansvar CEO Warren Hutcheon was pictured flying the flag on behalf of the Australian business as he entered the famous abbey in London.

The charity-owned financial services group, formerly Ecclesiastical Insurance Group, is the fourth biggest corporate donor in the UK. It has supported The Prince’s Foundation for some years among its 10,000 charities.

“Our Service of Thanksgiving at Westminster Abbey was a wonderful celebration of our achievement ... which has helped to change thousands of lives for the better in the UK and abroad,” Group CEO Mark Hews says, adding that Westminster Abbey was “one of our most precious and prestigious clients”.

"We have played our part in great Abbey events over the years, including insuring the Coronation of Her Majesty Queen Elizabeth ll, now celebrating her Platinum Jubilee.”

Benefact Group distributes donations through a range of programs – employee giving, business giving and programs such as its Movement for Good Awards – as well as giving all available profits to its charitable owner, the Benefact Trust.

"We are driven by how much money we can give away,” Mr Hews said. “This gives us real purpose.”