Revenue model sell-side M&A

Hi monkeys! I work at a small corporate finance boutique where we primarily assist firms with raising capital and IPOs. However, one of our project leaders got his hand on a small project that he thought we could assist on. This involves finding a buyer in Sweden to acquire an asset from a UK-based firm. My question is - what does a typical revenue model for a deal like this look like in terms of success fees, cash/equity reward, overhead costs etc.?