No, just regular tennis balls.
clay (clay courts) and tennis (tennis shoes)
Three types of tennis courts are hard courts, clay courts, and grass courts.
Yes there are many tennis courts in England.
I believe the difference in the two balls is the bounce.
Grass and Clay
Clay courts are known to be the slowest tennis court.
You can find clay courts all around the world. Such as france. You can find them anywhere if you look them up
No, All Tennis courts are 78 feet long by 36 feet wide including the doubles tramlines. It may seem that grass courts are smaller either by the camera focal lengths used or the fact that clay courts hold up the ball bounce and so slow down the play.
definitely a hard court, grass courts and clay courts are slower