gr8 balls of fire - being dyslexic should'nt stop you from being a commercial pilot but as tiggermoth says you best check with the CAA first, but i do have a couple of friends of mine who are both dyslexic and both of whom are commercial pilot's 2 of them are Captains, one of them with the company i fly for and the other was a Captain with EXCEL and is now a senior F/O with Cathay with his command with them coming up in the next couple of months. Another friend of mine is just about to start his ATR type rating.
So dont let the fact that your dyslexic stop you - anything is possible if you put your mind to it and work hard.
brgds
W.G