We have put together a short survey to capture your feedback in terms of what BT can do when you experience home Wi-Fi issues. We would appreciate it if you could take a couple of minutes to complete a short survey. Read more from here, Fix my home Wi-Fi
The only issue could be if there are no spare ports in the fibre cabinet, as your existing Sky fibre connection will be ceased, and given to the next person on the waiting list, which would not be you.
Check before you move, to see if the cabinet is showing "waiting list" If it is, then you will lose your fibre connection.
In order to find out what services and speed range you should be getting, please enter your phone number into this form.
Broadband availability checker
Please remember to edit out your phone number before you post the results.
Then you should be fine if the address checker shown that the cabinet is not full.
I agree with adly. Do NOT change anything you don't have to. The connections are supplied and serviced by the Openreach monopoly, not BT, and so you will still end up with the same provider. The OR engineers are very good but the BT back office function is totally broken. It is utter chaos in there. I am just now coming on stream with a second line ordered from BT Business in December. Just to start the ball rolling they automatically cancelled the order twice before getting on with it.
Don't even think about changing just to save a few quid. You'll regret it. As Webby says, the people who appear here are those with problems - and there are lots of those.
Try looking at the number of complaints on other ISPs forums, you will find the same complaints. The advantage on this forum is that you can get help if you need it, via the forum moderators, if it cannot be resolved by forum members.