You can apply for a visa on behalf of a friend or family member so they can visit you in the UK. Visas to visit the UK are usually for up to 6 months.
If you’re applying for them
You’ll need to check if they need a visitor visa on GOV.UK if you don’t already know –
You’ll have to apply for Visitor Visa online.
There’s an option to “apply for someone else” on the online form. Make sure you put the visitor’s information in where it asks for the applicant’s details.
After you fill in the form, the visitor will need to have their fingerprints and photograph taken at a visa application centre. Check where their nearest visa application centre is before you apply, because it might be in a different country.
The online system will tell you where to send the form once it’s filled in (you have to print it).
Help with filling online Visa Application Form
The online form asks you some questions to get to the visa you need. Click here to find out how to fill the UK Visa application form.
it depends on their nationality. Citizens of some countries don’t need a visa to visit the UK at all.