10Mb without a Virgin Phone line - £16 a month for 3 months then £21 a month
http://shop.virginmedia.com/broadband/up-to-10mb.html
make sure you get a
SuperHub with your install to future proof yourself, don't accept the standard VM Hub! reject it if the tech goes to install it or send it back if your sent it.. you can confirm all this while making an order. SuperHubs are now standard kit for all broadband packages and are the future... you may get a free upgrade next year
You can whack the SuperHub into modem mode and hook your own router if the SuperHub doesn't meet your needs.