Contribute to partners pension

This can only be done if the wife is actually working for the company. You cannot pay a spouse a salary just to avoid tax.

Note that I referred to circumstances where the spouse is a director.

Perfectly acceptable to pay the spouse (say) €25k per annum in his/her capacity as a director.
 
No disrespect, but you might also want to consider the possibility that the couple might split up in the future. It does happen.

Do you really want a significant part of your assets in her name and under her direct control?
 
No disrespect, but you might also want to consider the possibility that the couple might split up in the future. It does happen.

Do you really want a significant part of your assets in her name and under her direct control?

That's a fair point. Though, in reality, if we were to break up, part of the split would be to have a fair and equitable allocation of finances etc. I am sure that my pension would not be only mine in that circumstance.