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

https://www.deltabookmarks.win/bridging-loans-in-the-uk-usually-cost-between-7-and-15-overall-monthly

Bridging loan costs in the UK usually add up to around 7% to 15% of the loan amount. Monthly interest rates typically range from 0.55% to 1.25%