Some corrections:
Old fart: 1.78m (5'10")
Wooden: 1.90m (6'3")
Pinky: 1.83m (6')
GCT when he was PM was the 2nd tallest chief exec in the world after Chancellor Kohl (1.93m, 6'4").
We have quite a tall cabinet, even by international standards:
Tharman: 1.85m (6'1")
TCH: 1.87m (6'2")
CCS: 1.80m (5'11")
NEH: 1.85m (6'1")
It's obvious that height is a function of good nutrition and multi-million salaries.