1 pound 2006

I have this coin (https://en.numista.com/catalogue/pieces2763.html) but it's a 2006 instead of 2005. Can't seem to find it at all. Should the 2006 be added or am I looking in the wrong area?

Hi, and welcome to Numista.

With UK pound coins, you have a very good chance of getting a fake one in circulation, in May 2015 an estimated 2.55% of circulating £1 coins in the UK were fake.

This link, shows the full list of designs and dates.

There have been many threads here showing fake coins, this one is the newest with many examples of UK £1 coins.

So I reckon if you have a mismatched obverse/reverse, it is more than likely a fake.