Wow, Naser --
That's strong doubling. Good eye! I wish the coin itself was in better shape. However, I think it carries some value over face. I think it is worth $5 to $15 US dollars.
Is your coin dated 2010? The ones I see on the Internet seem to all be 2010.
Poking around, here are some info I've found.
1. Your coin is known well enough to show up on CoinTalk:
The CoinTalk thread is interesting. Apparently, someone brought it up with the Royal Mint, and the mint dismissed it as machine doubling, not truly a doubled die. I would be surprised if this were the case. It does not look like machine doubling to me, but it looks like a very strong doubled die, something that the mint would not be proud of.
2. There's also a guy on eBay who calls this coin "counterfeit" but gives no explanation why:
This coin is dated 2008. The counterfeit claim is weird. I would dismiss this item.
3. The clincher is this eBay coin which is currently at auction:
They guy is trying to get more than $30 for it, which is (in my book) way too much.
I suggest you watch this auction and see what it finally sells for.