Where can I find the bank details for Bosta UK?


You can find bank details on all headed correspondence. 
They are also shown here: 
 GBP Payments 
 Sort Code - 23-88-59 
 Account No. - 20667373 
IBAN - GB71INGB23885920667373 
 Swift - INGBGB22 
 EUR Payments 
 IBAN – GB60INGB23885920667474 
 Swift - INGBGB22 
 VAT No.: GB636795492