If you are dismissed from your job 'unfairly' (for instance, your employer may not have selected fairly for redundancy, or your job may not actually have been redundant) you could take your employer to the Employment Tribunal for Unfair Dismissal.
If your job is genuinely redundant (for instance. because your role is no longer needed, or new technology has made it commercially unviable) you will be eligible for a redundancy payment, if employed by the business for two years or more. The minimum payment is set by statute and is calculated on the basis of your age, the time you have been with the employer, and your salary or earnings.
If you are redundant because the business has closed when insolvent, we may be able to help you get a payment from the National Insurance Fund.