False Documents

[Roha1]

My name and signature were used in supporting documents for their visa application without my consent, and I just discovered that the visa has been approved. I doubt it contain a letter of sponsorship from me and my tenancy agreement.

If I discovered that someone intends to visit the UK not for vacation but for childcare, what should I do? Is there a way to report/complain about this? It is important for me to keep everything confidential.

[AmazonianX]

My name and signature were used in supporting documents for their visa application without my consent, and I just discovered that the visa has been approved. I doubt it contain a letter of sponsorship from me and my tenancy agreement.

If I discovered that someone intends to visit the UK not for vacation but for childcare, what should I do? Is there a way to report/complain about this? It is important for me to keep everything confidential.

It means visa was obtained with deception and your identity stolen for the purpose.
Lodge a complaint and if possible state as much details of the applicant and or visa information as you can to aid HO in pinpointing perpetrator.

[Roha1]

What if I found its a cover/invitation letter?

[AmazonianX]

What if I found its a cover/invitation letter?

Your question not so clear. If you mean a cover or invitation letter used for the application done in you name you can still lodge complaint, taking action or not now depends on HO.

[Roha1]

Where I can complain this about? any email address?

[JB007]

Where I can complain this about? any email address?

Online

You do not have to give your name and address.

Any information will be treated as confidential.

https://www.gov.uk/report-immigration-crime

Phone

You can call any of the following numbers to report a crime anonymously.

Immigration Enforcement hotline
0300 123 7000

Crimestoppers
www.crimestoppers-uk.org
0800 555111

The Anti-Terrorist hotline
www.met.police.uk
0800 789 321

In an emergency, dial 999 and ask for the police.