Broadband frequently disconnecting

[Abramovic]

I have recently moved house and after a month of being mucked around by BT (Im in UK) they finally got our broadband sorted. However, I experience frequent disconnections. The broadband will cut off for a minute or so, then come back on.

This is with a wired connection (ethernet) but it also happens on my laptop (wireless) so I think the problem is with the line or modem. The modem worked perfectly fine in my old house so I think that can be ruled out.

Any suggestions?