Daisy chain is the method sparks use for wiring a consumer unit to lights or mains sockets. Most domestic video and audio doesn't work that way. So don't wire daisy chain otherwise your system will be useless for running multiple boxes.
Virgin media uses an upgraded version of satellite coax, but instead of double shielding it has a triple shield. The cable name is Webro HD100. The shielding is as much to do with preventing interference radiating out from the cable as it is to do with stopping external interference getting in. With the exception of its shielding quality, HD100 is a bit more lossy than Webro WF100 which is a very good satellite grade coax.If you want to pre-wire the house ready for the VM install then use WF100. Wire this in single runs from where the VM outdoor cable comes in to the house to each point where you expect to fit a VM box. Your VM installer will supply an appropriate splitter. He will also adjust the signal level coming in to the house to cope with the splitting losses.
Not all satellite cable is the same. The sheds sell aerial extension cable in kits. It is rubbish. You'll find a lot of Ebay sites sell RG6 or just don't bother spec'ing the cable they're selling. You might see it sold as some kind of "Low Loss" coax. You really need to give these cables a wide berth otherwise you'll end up ripping it out and redoing the job with the proper stuff you should have bought in the first place. Go to a supplier you can trust. The same supplier can also ensure you buy the correct size connectors and help you with the supplies of accessories to make the install go smoothly.
Satcure has a good site for this.
The back of VM boxes use the same kind of screw-on connectors as satellite boxes. The connector is an F-type. Do not use ordinary aerial plugs and socket plates for connecting the VM signal leads. Use wall plates with a double-ended F-type barrel connector. Put a plug on the cable in the wall. Then screw that to the back of the outlet plate. make up a fly lead for going from the wall plate to the VM box. Alternatively you could just fit a brush plate and have the in-wall cable left long enough that it can reach where the VM box is to go. Electrically this is a better solution because it involves fewer connections. Mechanically it is kinder to the cable too as trying to fit terminated cable to the back of a wall plate often results in cables getting bent or crushed since insufficient free space is allowed for because it's harder work to chop out for really deep back boxes.
There are tricks such as using right angle F connectors, but you still need to accommodate the excess cable somewhere when the wall plate is screwed to the back box. If you're sensible and the structure of the house allows for it then you'll chop out for a run of box conduit from the socket down in the the floor void where the cable is coming up from. That will allow you to slide the excess cable back down and make the plates much easier to fit as well as avoiding cable damage.
Image courtesy of the
Satcure web site
You'll probably also have a VM cable modem fitted to give your computers and the like access to the web. Have a think about where you might want to locate that, and also about wiring up some network sockets around the house. Most of my clients automatically respond that they don't need network sockets, they'll use wireless. I don't have time to go into all the detail right now, but that's a really short-sighted approach particularly as the future of home entertainment is moving towards streaming and home servers and file sizes for that are getting bigger each year.
