Chappers
Striker
They still do special brewJohn West tuna is the one that springs to mind
Was 185g then 160g now 145g
A lot of the other brands are still 160g having previously being 185g
Beer taxes are another. Stella was 5.2% then 5.0% now 4.8% just to maintain price. Carlsberg special brew has dropped from 9% to 8%