The price per share is calculated in accordance with Freetrade’s Articles, which set out how the total sale proceeds of £160m are distributed to each class of share. The Articles are publicly available at Companies House at https://find-and-update.company-information.service.gov.uk/company/09797821
As is standard in a company sale, the sale proceeds are distributed to the selling shareholders after the sellers’ transaction costs have been deducted. The price in the Drag Along Notice here is the price per share after those deductions.