This is the list from videoslots
Examples of documentation for source of wealth:
Inheritance:
A copy of the will that must include the value of the estate.
A lawyer or notary’s letter on letter headed paper.
A letter from the trustees of an estate that includes the type of asset and respective value.
Sale of property:
Signed letter from a lawyer or a notary on letter headed paper.
Contract of sale.
Employment Income:
Payslips.
Bank statement showing receipt of latest salary income.
Retirement Income:
Pension statement.
Letter from annuity provider.
Bank statement showing receipt of latest pension income and name of provider.
Winnings
Letter from relevant organisation (Lottery headquarters/betting shop/casino).
A certificate of winnings issued by the relevant company or casino. E.g. print screen of the casino account showing winnings.
The case of lottery winnings, a bank statement showing funds deposited by company name; or copies of media coverage (if applicable) as supporting evidence.
Other
Bank statements confirming receipt of such income from identifiable sources, or savings.
A trust deed showing consistent entitlement to income (e.g. as a beneficiary).
Evidence of receipt of a gift.
Any other document evidencing source of wealth
now even though I have thousands of pounds withdrawals fro
leo vegas, I cant confirm it as it just comes up with a transaction number, (trustly withdrawal), I am certainly not going to ask them for a letter!! to prove this,
But seriously just look at that list, who on earth would provide such info?