2011 or 2012 Pension Relief?

I want to make a small lump sum (AVC) contribution to my pension fund.

However last year I was paying 41% income tax and this year I am paying 20% as a result of a pay reduction.

Can I still make a pension contribution that can be offset against 2011 or is it too late?
If I can, is there anything particular I need to do (worried that employer may just lump it in with 2012)

Thanks in advance for your help

Maybe I should have posted this in pensions rather than the Taxation forum (but I don't want to break the rules and post it a again) but it's over 2 weeks since I asked so I just want to ask again? Anyone know the answer?

As far as I know income tax returns for 2011 have to be done before 31st Oct.2012
I presume this must cover pension AVCs

Thanks Mary.
Yes I know the pay&file dealine is looming. My question is more related to the timing of the contribution.
If I make apension contribution now (October 2012) Can it be offset against my 2011 income tax return (filed at end October 2012)?

Yes - a payment made now can be applied against either year.

You can make the payment now and elect to have it offset against 2011 income provided you have not exceeded your limit for 2011.

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