Could not find them in UK, none of the dealers do them, got mine on fleabay.
Come from Germany within 3 days have had several things from them.
Quick service but you will need a Paypal account.
You could try Jessops. LCD screen on cameras need protectors.
Can't remember the price tho. You may need to buy a "camera care kit.".
I used one on my SP111.
It has been on for a year now and I am more than happy with it (I had to polish off the anti reflective coating of my Quest 1 after a couple of month), the screen has in my opinion improved in readability compared to the original coating.
I bought some last year from Germany on EBAY and they are good, gave a few away and have a few spare as you get a few for your monry. Well worth it so you can use your dirty gloves on the screen even though it has no effect on the route!!!!