Partner lied on previous visit visa application. We are now married, but his spouse visa was refused as they don't believe we have been together since 2012. We are appealing but can he be banned due to previous conduct?
Yes, potentially. It depends on the wording of the refusal. Once a deception is on record, any future application may also be refused (for up to 10 years, I believe) under paragraph 320(7B) of the immigration rules.