"The issue of shipbuilding on the Clyde became a central plank of the pro-Union campaign during the 2014 Independence referendum.  Both the Labour party and the then David Cameron led Tory government pledged to build thirteen Type 26 frigates on the Clyde.  The programme was to be underpinned by a new so-called ‘frigate factory’.  The total cost of the programme was estimated to be in the region of four billion pounds.  However shortly after the Independence referendum returned a ‘No’ vote, the Type 26 order was cut from thirteen to eight."
https://indyref2.scot/scottish-labour-mps-clyde-yards-at-capacity-claim-rubbished-by-trade-union-official