Hello, I am a solicitor with 20 years experience. I will try to help you with this.
Do you have your own individual agreement for renting your own room or is a joint tenancy with the other occupiers?
Are you still within your fixed tenancy period or are you outside it and therefore on a rolling (usually monthly) tenancy.
When was the notice served, when is it dated, what date has he required you to leave by? When, roughly do you intend to leave?
you are absolutley he has an obligation to put your deposit in a deposit guarantee scheme.
Ok so he has given you a valid notice. However he cannot evict you without a court order. I will not be hard for him to get a court order and he can do this quite quickly using the accelerated possession proceedings route. There is rarely any defence that can be used in these proceedings but it will take him several extra weeks to get the order. You would end up liable for his legal costs though if he obtained such an order in addition to rent up until you actually leave.
It is not something that is entirely right legally in contract law but if you think your landlord is going to rip you off over the deposit can you protect your position by using the traditional method of witholding rent.
As far as the law is concerned you must leave on or before 07.07.15 and if you don't he will have little difficulty obtaining a court order for possession + costs against you. Accelerated possession proceedings can not deal with rent and deposit issues.
I don't quite understand that last question.
You can sue him for compensation amonting to, I think, up to 3 times the amount of the deposit.
Here is an extract from a document published by Shelter on this point.
Penalties when a deposit is not protected oris protected lateChanges to the law in April 2012 allow courts to order landlords whofail to comply with the law on tenancy deposit protection to pay compensation to tenants. The penalties apply to deposits paid for assured shorthold tenancies that started, or were renewed, on orafter 6 April 2007.A court can order your landlord to pay you compensation of between one to three times the value of your deposit, if s/he:■ only protects your deposit after 30 days ■ fails to give you details of the scheme s/he’s using within 30 days ■ fails to protect your deposit. A court can also order your landlord to protect your deposit by using one of the schemes listed on page 12.Use Shelter’s online checker tool to see if your deposit has been protected: tinyurl.com/deposit-checker
But don't get too excited by this awards of that level are virtually unheard of. It is a useful bargaining threat though.