In the 1980s, facing Lillie and Thomson et al in Australia, he was once on track to make the slowest ever test 50 before - to the great disappointment of the Test Match Special team - speeding up.
Someone remind Pietersen that time is as valuable as runs today.
Update: apparently, Tavare is 'only' the third slowest test batsman (only considering those who have scored 1,000 test runs). The other two are also English, including St Mike Brearley. Oh for those two today.