Do you guarantee to improve my broadband speed?

No, sadly there is no guarantee that your broadband speed can be improved, especially if you are located a long way from an exchange/fibre cabinet. If you have only one socket connected directly off the BT network with no other internal wiring, then chances are you are likely to be on the fastest speed achievable. However, if you have a complex wiring setup with many other telephones connected onto your line, then there is a good chance that I can make alterations or remove unused wiring to improve your overall broadband speed.
Every property is different so it is always worth contacting me for friendly advice.