Hague was denied job by Thatcher

[Jeneral2885]

http://www.bbc.co.uk/news/uk-politics-23518593

Mrs Thatcher scrawled across the top of the letter in thick black ink : "No [triple underlined] - this is a gimmick and would be deeply resented by many who have financial-economic experience."

[LeftishBrit]

1. Hague would've been 22 in 1983

Thatcher may have perceived a potential future rival in him; but I think most leaders would have been reluctant to employ someone that young in such a capacity. Even nowadays, let alone in the 80s.

[tjwmason]

2. The present cult of youth is bemusing

Age does seem to be the most reasonable explanation.