[brucegriffin]

Thanx to everybody who has replied.
Nere's the configuration of my modem (I think):
Cable Modem Configuration

Type : Ambit ETH/USB Combo Cable Modem Cable modem : Ambit Cable Modem
MAC address : <deleted> IP address : 10.100.<deleted>
Serial number : <deleted> Board ID : E08C004.00.00_EU03
Software version : 2.67.1016 Hardware version : 1.15
Boot Code version : 3.13.2 Web Based Configuration Pages version : 1.0.2
USB AdaptorName : USB Cable Modem USB MAC address : <deleted>
USB vendor ID : 0bb2 USB product ID : 6098

our internet plan with Vigin is M (I think)

Thanx again everybody

Sincerely, Bruce in Dorset

Edit Rob: Mac Address and some other bits deleted to protect your own privacy - the unscrupulous could make use of it