During the current pensions campaign the FBU is encouraging members to contact their MP's. Of course here in Scotland, much of the relevant work is undertaken by the Scottish Parliamnet. We would therefore encourage members to also contact their MSP's - and please do bear in mind that you each have 1 constituency MSP plus several List MSP's.
Their contact details are available here
There is also a website where you can contact all of your politicians - here
You can also track your MP (and others) using this site.