In my case (self employed + paye spouse) after AIP, to go full drawdown required everything again up to date and valuation from bank that the house was worth the buying price. Solicitor requested the drawdown btw. Mortgage insurance protection needed to be in place, as did house insurance (which I always find funny as we dont actually own the house yet when setting up insurance!). This was our third time doing this (buying) yet everytime is stressful and always takes longer than you think. (We bought this time last year so pre-Covid!).