I chose Quietco from the internet for a discussion and quote for sound proofing. Jim came promptly; he is plainly dedicated and intelligent, and followed through with all aspects of what I needed. His staff, including Tom were part of the fitting team which were helpful and very understanding, so that there were no problems with finishing on time.
I feel much more relaxed in the house and from growing experience can endorse his claims that the products he fitted are very efficient. I am not hearing any sounds at all through the main product fitted, and also did not hear an alarm across the road through the secondary product.
The products also improve insulation in the room!