A Cover from Great Britain

I received this simple yet nice cover a couple of days ago. It is actually a Christmas card sent to me by a very good friend of mine - Jeo. I like this cover because the postmark is clear. The cover was cancelled at Chelmsford Mail Centre in London on 23 December, 2008. I couldn't help to notice that the postage is now 81p! I still remember, I stuck 41p stamp on letter back to 1995!