Mrs May said she regretted Ms Cooper's decision to be "party political" on the matter.
The hospital said Wednesday that it deeply regretted the call had been put through.
Ms Pryce told the trial it had been a "very embarrassing incident" which she greatly regretted.
It was Woodrow Wilson who started the formal press conference, and quickly regretted it.
Council leader Mick Henry said the authority "deeply regretted" having to reduce the authority's workforce.
BBC: Gateshead Council confirms 275 jobs to go in budget cuts
Miss Barrett, who has now left Cambridge, said she regretted not asking for help earlier.
Ms Bache said she regretted losing contact when they went their separate ways as teenagers.
He said the bank had made a number of mistakes, which he deeply regretted.
Catherine Ashton, the EU's top diplomat, said on Monday she regretted Serbia's rejection of the plan.
It is understood that Ubisoft regretted its lack of creative input in the film.
He said the organisers regretted what happened and that it had overshadowed a very important discussion.
It can happen to anyone who has ever posted a later-regretted photo or video online.
Ms Jackson added Ms Leighton had thought seriously about her actions and deeply regretted them.
Bush, in his memoir, writes that he regretted pursuing the issue when he did.
She later said she regretted her remarks and that sectarianism was a "shared problem".
BBC: Mary McAleese and her husband Martin during Belfast visit
He described Anderson as a respected member of the fishing community who deeply regretted becoming involved.
That relentless pursuit was one of the things that Armstrong said he regretted most.
Durham County Council said it regretted the decision by Durham University to pull out of the scheme.
Joseph Collis is said always to have regretted taking the stone from Shackleton's grave on the island.
BBC: Stone returned to Ernest Shackleton's grave after 75 years
In its statement, Innocean Europe said it deeply regretted any offence or distress the video had caused.
He said the company very much regretted the decision and it was no reflection on the workforce.
Lucy Morton, deputy general secretary of the Immigration Services Union, said she regretted its members were striking.
BBC: Public sector strike could see Heathrow 'grind to halt'
But as soon as she got in the car to go home, she regretted it, Kelley said.
Furiously mincing his words, Mr Hoon said he regretted her husband's death, but hasn't apologised for it.
Trustees defended their actions last week, but they also said they regretted firing Mr. Paterno by telephone.
Mr Taylor said he "deeply regretted" the council's failing to work with other agencies in safeguarding children.
Morsy said he regretted the sorrowful developments from the violence, but the legal process should be respected.
I've never regretted those first steps out of my comfort zone and into the world of diplomacy.
The Parades Commission has said it regretted that the Orange Order still would not meet for direct talks.
Meanwhile Universities UK, the umbrella body for UK universities, said it regretted "the BBC's approach in this matter".
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