The documents required for a UK Visa are as follows:
- A valid passport that has a page blank on twin sides
- The completed form for Visa application
- 1 Passport size photograph as per the specifications
- Visa fee
- Evidence of finances like original bank statements not earlier than 3 months
- The confirmation of flight bookings and accommodation
- An invitation letter if you are being sponsored by a family member or a friend
- Original marriage certificate if you are being accompanied by your spouse
- Birth certificates of your kids if they are accompanying you
- Latest utility bills
You may also have to include the following if you are travelling for business:
- A letter of confirmation of conference/ confirmation of training/ invitation
- Complete details of an approved representative in your firm along with their contact details