Thank you for the reply and interesting information Geoff.
I have had a quick look, "Alea" is Greek and refers to the Goddess Athena. Alternatively, it is a Casino in Nottingham. I'm not keen on either although I have taken a gamble buying the boat without looking at the sails. If you are keeping records I'll let you know the new name as soon as my Grandchildren come up with a decent name; something a little less embarrassing than "Oswaldtwistle".
One of the sail bags has a tag marked "Warwicker" to back up your information.
I understand the boat was up for sale due to the previous owner passing away and anecdotal evidence suggests it was kept on the Orwell. I was pleased to find plenty of cleaning materials on board so bless him (or her) and thanks for a clean ship.