Can I use a driving license as proof of address for a Non-O spouse visa application from London?

Users confirm that a driving license can be used as proof of address when applying for a Non-O spouse visa from London. Many have reported successful applications using this document. It's advisable to include additional documents like a marriage certificate and possibly a signed letter of invitation from your spouse. Clarifications about the signature requirement on the ID were also discussed, with no strict obligation noted, though providing a signature may be beneficial.