Lawyers for the Joint Committee of Primary Care Trusts have rejected unfairness claims made by campaigners fighting the closure of the Leeds children's heart surgery unit.
"Save Our Surgery" claims that by not revealing the score breakdown to decide which unit should close, the process was unfair.
The group have taken their fight to the High Court this week, but lawyers for the JCPCT said there was no legal obligation to release breakdown, nor would it have been of assistance if they had.
They also argued Leeds was given sufficient feedback to make meaningful responses.
Last year the NHS decided that the Freeman hospital in Newcastle should become a centre of excellence for the North.
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The constituency of Washington and Sunderland West includes the UK's largest car plant, which was opened by Nissan in 1984.
This seat was formed prior to the 2010 General Election, taking in Sunderland city centre and the Ryhope area to the south.
The constituency of Stockton South includes relatively affluent areas like Yarm and Eaglescliffe.