Welcome to the forum!
St Andrews is probably the best best on the East coast. When you go make sure you are within the kite zone which is marked by yellow flags.
The kite zone is at the far end of West Sands beach. Check out the location reviews for more info.
http://www.tractionkiting.co.uk/location-map.php
There is a great community of kiters at St Andrews and this is where the TK team can mostly be found. Come over and say hi if you see us flying the TK flags
We wont be there until the 26th April though due to us going to Tiree for a week.
As I have already mentioned in another post today, if you don't have kiting insurance we would recommend you get some, it only costs £22 a year and well worth it.
www.spka.org is where to get it from.
O.