The Children's Heart Federation charity has said it is "horrified" by the bill run up by the Royal Brompton Hospital, in its courtroom battle with another NHS body.
The hospital had challenged a consultation by the Joint Committee of Primary Care Trusts, which had proposed closing the children's heart unit at the Royal Brompton.
The charity has urged other hospitals not "to waste this level of money on further legal action".
More top news
As upcoming film Suffragette highlights the plight of women fighting to get the vote, we take a look at the key moments in the struggle.
As the upcoming film Suffragette is about to be released, ITV News speaks to the family of one of the key figures in the movement.
Something is afoot in Walthamstow, with several Twitter users posting videos of fights.