Everytime we turn on the taps in the sink or the bathtub on the top floor
of our townhouse, there is this loud banging/rattling noise which disrupts
the flow of water coming out of the tap.

The water stutters as it comes out of the tap, usually when we turn on the
water quickly.
This happens for both the hot and cold taps.

And it's only on the top floor of our 3 storey house.

Any suggestions?