Team Members funding Personal or Joint Account

[S_M_A]

Hi Gurus

I need your advice on Tier 1 Entrepreneur out of UK Visa.

I am applying for Tier 1 Entrepreneur Visa with a team member from Pakistan. Each of us have GBP 100,000 in our personal accounts.

My questions are

1. The amount was a gift from my and my team member’s parent, so do we need any letter from our father to provide any evidence that the amount is actually a gift?
2. Since we have GBP 100,000 each member in our personal accounts separately instead of a joint account, do we need any letter from the solicitor to validate that the amount is readily available from both the team members to be invested in the business? Or should we have a joint account instead?

Will wait for your expert opinions

Thanks