Membership of Stockton Divers £180
 
Training fee costs for both Ocean diver and Sport diver grades incurred in the first year £250. Training costs are free from Sport Diver onwards.

Note you will also need to order and pay for the below separately after registering with BSAC at https://www.bsac.com/membership/ 

British Sub-Aqua Club full membership £65 ( junior membership £37 )
British Sub-Aqua Club Ocean diver qualification log book, certification and study materials £42.