Outside Tap Questions x 2

[V41LEY]

1. The tap at the rear is running really slow. Runs off the kitchen cold water supply which has really good pressure. Pipe runs under the kitchen floor to the outside wall. Any ideas ? Do live in a very hard water area.

2. Is there anyway I can install another tap in the front between my side of the water meter and the cold water stopcock inside the house ?

Cheers