Tonton - do you know how many people are going to be made redundant?
As others have said, you are legally entitled to be paid your notice period one way or another. You can either be asked to work it (in which case you can use that time to find a new job) or be paid a lum sum in lieu. As others have said, sometimes this will be taxed and sometimes not (it's complicated. Whether they have to or not relates to the wording of your contract, plus their normal practices). If they don't have to tax it, most companies will still pay you the gross sum (although, if they want to be tight, they can pay you the net). The contract wording also affects whether you get the value of benefits if you are paid out.
On top of that you will get any accrued but untaken holiday, plus any other contractual entitlements (e.g. if you have a sales bonus which is already due).
As you know, as someone with less than two years' service, you don't get statutory redundancy (it's tiny anyway), but a lot of employers who have enhanced schemes give this to anyone, or anyone with more than a year of service.
Finally, if 20 or people are to be made redundant (at one place within 90 days), they have to consult with you for 30 days. If it 100 or more, the consultation period is 90 days. This gives you a lot longer to find a new job. If they don't do this consultation, you can be in line for an additional payment of 90 days' salary to compensate you (even if the consultation was only meant to last 30!).