Hi Iwas,
WPS would the simplest option, so depending on the Bravia you have you should be able to do the following..
Write the 8 numeral WPS pin located on the white sticker on the back of your Virgin Media Hub..
Switch on your Bravia..
Press Home on your Bravia's remote, then scoll to Settings..
Above settings select Network set up
Then select Wireless set up & select WPS pin
Then following the instructions until you are asked to enter your WPS pin..