Thanks for your question.
You will be entiteld to the statutory minimum notice period under Employment Rights Act 1996 which in your case, because you have worked for 12 years or more, is 12 weeks. Note that your contract of employement may state a longer notice, if it does you will be entitled to receive that.
You have the right to to be unfairly selected for redundancy, and you may have a claim for unfair dismissal if you are. Your employer must apply selection criteria consistently to each employee under consideration. Such criteria includes attendance records, disciplinary records, skills or experience, standard of work performance, qualifications, and apititude for work.
If the criteria or their application is discriminatory on the grounds of your sex, race, religioin, disability or age then you will have a claim agianst your employer for unfair dismissal and possibly discrimination as well.
Certain reasons for which you can never be 'fairly' selected for redundancy include asserting a statutory right, working time issues, parental leave, trade union activities, whistle blowing, health and safety.
You will also be entitled to receive as a minimum a redundancy payment of not less then the statutory minimum, you can work out what that is here:-
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