Bridging loan costs in the UK usually add up to around 7% to 15% of the amount...

https://mighty-wiki.win/index.php/Why_Do_Small_Bridging_Loans_Feel_Expensive%3F

Bridging loan costs in the UK usually add up to around 7% to 15% of the amount borrowed. Monthly interest rates tend to range between 0.55% and 1.25%