If you have not made an application to the EU Settlement Scheme at all and have no other valid immigration status in the UK, you won’t be able to evidence your rights in the UK. In this case you should seek advice urgently to discuss the options available to you.
If you were eligible to apply to the EU Settlement Scheme but did not apply by 30 June 2021 you lost your lawful status in the UK (unless a different deadline applies to you, for example if you are applying as a family member).
From 1 July 2021, where a person without status under the EU Settlement Scheme is encountered by Immigration Enforcement (or referred to them), the officer will consider, on the basis of the information and evidence available to them, whether the person may have been eligible for status under the EU Settlement Scheme, as an EEA citizen or as their family member, had they made an application under Appendix EU by 30 June 2021
Where it appears to the officer that this is the case, they will provide the person with a written notice giving them an opportunity to make a valid application under Appendix EU, normally within 28 days of the date of the written notice. No immigration enforcement action for being in the UK without permission will normally be taken during this period. The guidance does not state what happens if a person does not apply within the 28 days deadline in the written notice.
Not having applied to the EUSS and therefore neither having a Certificate of Application nor lawful status affects your residence rights in the following ways:
Employment
You cannot apply for a new job as you will not pass a right to work check.
If you were already working by 30 June 2021 but have not applied to the EUSS, and if your employer becomes aware of this, they can give you 28 days to make your EUSS application but must then take steps to end your employment if you do not apply within that time.
Renting accommodation
You cannot rent a new property after 30 June 2021 if you have not applied to the EUSS as you cannot pass landlord immigration checks.
Existing tenants do not need to be checked by landlords. If a landlord did find out that a tenant had not applied in time to the EUSS, they need to report this to the Home Office and advise the tenant to apply to the EUSS within 28 days.
Healthcare
Someone who is eligible to apply to the EUSS but who has not submitted an application by 30 June 2021, who is therefore in the UK without immigration status, will be chargeable for treatment. Any payment you make will not be refunded if you later apply for and are granted status under the EUSS.