1. Thanks for the honest reply, he applied cause he knows he was not at fault whatever happened to him during his visit to the UK. He had all the docs available to prove that. Still, the VO was not satisfied, I am afraid even after 3-4 years he may not be eligible for TRV.
Yes, my parents also applied with him there decision hasn't come yet actually my dad is the main applicant. Is it (bro refusal) going to affect my parents' application?
2. When his college was closed in the UK, his visa was valid and he contacted the UK home office to verify that and that is the reason he was seeking admission in another college. I don't think he was banned to re-enter but still, I will ask him to check with UK home office. one thing he asked for the police clearance once he returned back to India from the UK and he was given the clearance from UK home office which we didn't attach to the visitor visa application also he did not attach the UK appeal which he won to remain in the UK on humanitarian basis to obtain legal travel doc to return to India. He had no intention to stay in the UK and voluntarily contacted home office to return to India.
3: yes, his previous WP application may have a significant effect on his TRV refusal but since 2015 he is actively involved in a business which has good turnover.