One adult pass for 17.50 from Travelzoo https://www.travelzoo.com/uk/local-deals/Hampshire/Other/290912/National-Museum-of-The-Royal-Navy-Portsmouth-Historic-Dockyard/?searchGuid=798c578a-b6d4-4aa6-aa0a-1c19b06260c1&dlocId=16078
Yeah they have now removed this from new passes. Shame really.
Code BLC22MAY still works for 20% off bringing it down to £30.42 (free delivery if selecting e-voucher) If you need just one adult pass its £19.50 here https://www.groupon.co.uk/deals/portsmouth-historic-dockyard-1
Plus the brand spanking new £3.1 billion aircraft carrier HMS Queen Elizabeth you can sail around on the harbour tour at Portsmouth. His was truly a strange comment.