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

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

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%