Hi Ang
You first made this point back in your first post on the thread.
http://www.askaboutmoney.com/showpost.php?p=1388609&postcount=28
I have made it clear all along that she should ask to go early, but not insist on it.
What point was that? I simply restated that the OP was asking was the clause enforceable. The answer by the way seems to be "legally, probably yes, practically, probably no". This is not either asking or answering if they should break the terms of a contract.
And, no, you didn't make it clear all along that she should ask anything: your first post on the issue made no mention of negotiation, and included a gratuitous insult, calling the questioner "nasty".
"Presumably she read her contract when deciding on her current job? She saw the notice period of 3 months and signed the contract.
Presumably when she was offered the other job offer, she told them that she had to serve 3 months' notice? And presumably they agreed to this. So of course, they will wait.
As an employer, I would be very annoyed if someone said that they wanted to serve a shorter notice period in the contract. If they came to me and gave me formal notice of three months and then asked nicely if they could go earlier, I would talk to them about it. But I would react very negatively if someone "put in for 5 weeks" whatever that means.
It seems to me that your fiancé is being nasty and not the employer."