Oh, tyropitas! I have been eating them for many decades. I used to buy the filo dough and have my dad, who was a freak for detail work, do all the brushing with butter of each layer. Yum! Now, I am a lazy dolt and just buy them ready-made in the freezer dept. at the supermarket! They also have spanakopita (spinach pies) and spanatyropitas (combo of cheese and spinach pies)! (The latter, can't remember if that's the proper name.)
Someone asked if the U.K. has pita bread. I am sure they do. They have had pita bread here in the U.S. for a very long time. It is available everywhere.
Plus, every day I drive 11 miles to work, I pass by the largest Greek importer west of the Mississippi River, C & K Importing Co., which carries EVERYTHING Greek one could ever wish. I know the owner, Chris Chrys. So if there's ever something hard to find, I just pop in there!
Portia de Los Angeles