Ah yes Teriblunder, the wonderful twenties and thirties for the average working Brit. Lack of investment in new techniques, depleted coal reserves, depression, decline, poverty, unemployment over 2,000,000 by the mid 20's, the great strike of 26 and the fantastic Wall Street crash of 29 leading into the depression of the 1930's.
Unemployment up to 2,500,000, crumbling industry due to lack of investment, the Jarrow Marches, more depression, the Means Test.

My God it makes you proud to be British.