Dr Alathea Foster is alleged to have attacked Julie Simpson after discovering a series of emails on her husband John Foster's computer. She is also said to have recounted her state of mind in diary entries which were today read out to the court.

From: J Foster To: J Simpson Sent: 4/4/2005

"My denials we had or are having a sexual relationship are not believed."

From J Simpson To: J Foster Sent: 4/4/2005

"I can’t believe your wife would walk out on you. You and Ally can go off for the next three months. You can tell her you won’t see me again. The only thing I ask is that if you and Ally do decide to split, please don’t use me as an excuse."

From J Foster To: J Simpson Sent: 4/4/2005

"If anyone is nearly perfect it must be you."

From: A Foster To: J Simpson Sent: 29/9/2005

"I would very much like to see or talk to you as soon as possible, not to recriminate. Just to clarify a few points. I think that we can both behave in a civilised manner. Perhaps I should add that there will be no need for you to lie about what has been going on between you and John.

"I’ve known for many years. I also hope you will not at this stage tell John that I have e-mailed you."

From: J Foster To: J Simpson Sent: 29/9/2005

"I fear an indiscreet e-mail has surfaced."

From: J Simpson To: J Foster Sent: 29/9/2005

"That explains the e-mail I had from Ally. She has known for several years. Given the most exciting thing we do is discussions together over a Daily Telegraph crossword clue I’m at a loss what to say to her. Perhaps you could enlighten me."

Diary entry: A Foster, 29/9/2005

"Raw inside is how I feel. "Years of duplicity and lies, lies, lies. He is sleeping with her and tells her our problems. I find the betrayal quite unbearable. How he has humiliated me but I can’t imagine being without him."

Diary entry: A Foster, 3/10/2005

"Now it’s 12.35 and I’m on the Cambridge Cruiser. I’m seeing her today. I feel very ill and confused and very upset."

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