Notice letters need to be short, to the point, and need to contain only your last day of employment, the current day, a signature, and that is it. The rest is fluff. Here, I'll write one off the top of my head.
"Dear Employer,
This letter is to inform you that I have opted to end my employment with (insert company name), effectively on (last day of work). I have decided to pursue a future outside this line of work and am grateful for the opportunity provided by this company. I would like to take this opportunity to thank you for these (length of service) of employment, and I won't forget my time here. I wish the company all the best.
Signed,
Your Name
Current date"
Also, I've found it is best to never use a previous employer as a reference (especially yours based on previous posts), but just some friends who can claim they work there instead. You never know what employers who have a bad taste about you might say or imply. Legal or not, I know some people who have given some pretty shitty references out of spite.
Last edited by Cerby; 18-08-13 at 12:38 AM.
"All is fair in love and war." - Francis Edward Smedley