Tail Docking has been banned in this country since April 2007

This is what our breed standard says about the Tail.
Tail Normally carried horizontally, but slightly above horizontal when dog is alert. 
It will take time for us to get our tails right in the UK , Most breeders are taking advice and using the standards of european countries who have had tails much longer than the UK.

There is however much more to the Rottweilers Tail than the way the dog holds it,follow this link to read more about it