Not qualified in any way, but I do take a keen interest in tax/pensions. Usually get the chancellor to give me about £2K back every year :-) But the more you know the more you realise you don't know.
Tunnie, hopefully the thing that an IFA will try and drum into you is how tax efficient pension income is in retirement if it's spread equally between two of you, rather than all from one person. You both have a tax free allowance of £11850, and that will apply to pension income too. So take the following two scenarios...
1) You have a pension income in retirement of £23700, but the wife has nothing. You get the first £11850 tax free, but then pay 20% on the rest - so £2370 tax. That means your family income is £21330 p/a.
2) You have a pension income of £11850, and the wife has a pension income of £11850 as well. Neither of you pay any tax, so your family income is £23700 p/a.
Not difficult to see that given the choice, spreading the pension savings as equally as possible between the two of you is more efficient - up to £2370 more efficient - than all the pension being in your name, and none in the wifes. Enough for a 'new' Omega every 3-4 months.
You can both currently start to draw the pension down at 55 - though that may increase to 57/58/60. Your state pension (£8500 ish currently) will be at 67/68/70. So as an absolute minimum you should be thinking of ensuring that your wife has 35 years NI, and a separate pension pot large enough to bridge the gap from the SP to the PA (11850-8500 = £3350 ish) at SP age. That'll require a pension pot in excess of £110K. If she want's to retire before SP age, then she'll need more to cover the gap.
It's unlikely she'll be able to pay into any past pension pots if they were company pensions.