Recently for sum unknown reason, my wipers are catching the body work?

Nothing had changed or been moved.

Single wipe is ok, put it on continuous it catches.

Would moving the wiper are 1 or 2 teeth cause an issue anywhere?

No, but they arent on teeth as such.

 

Slacken off and move down a touch then do back up.

mine does the same but I haven't got round to sorting it out. Let us know how you get on.

Well I am stuck in France ATM and I can't get the arm off :(

I have ordered a tools and will look at it when I am home

When I originally bought by car, the wipers made a noise at high speed and/or high winds. I told the dealer about it, but failed to solve it after 3 times of telling them. I solved the issues by replacing the wipers with Bosch aero-twins.

I just put some on before I came away, but it still happens :(

changing the blades won't alter the position of the arms. Follow Tech1e's answer.

I had the exact same issue not long after buying mine and took a chunk of paint off, took it back to skoda and they took them off and refit them now there perfect.