Hi there,
Just a quick update of this thread. I went on to buy 10kg premium cured live rock along with 2kg live rock rubble from
Live Rock UK online website. I received the Live rock on Fri 5th October and I've had in the tank for several days now.
So far to be honest with ya I'm abit disapointed with the rock as I was after live rock full of life and critters. I received 4 large pieces of rock that had hardly any coralline algae on them,

instead it looked like base rock with the odd dot of purple on it! 2 of the pieces seem to have a macroalgae of some sort growing on them (which I'm not too keen on!) The morning after introducing the live rock into my tank I noticed a few dead bristleworms floating/lieing around my tank!

The only real life I have seen so far is a small common crab which is supposed to turn into a pest as it gets older/bigger so I have put the little chap in my refugium for the time being till I decide what to do with it!
The rock hardly seemed to take any space in my 25G tank so I visited a couple of marine shops that stock Live rock in my area (the closest of which is approx 15mile away!) and hand picked some amazing coloured pieces of live rock covered in purple and ful of life! As I was there in person I got to inspect each piece thoroughly and pick the ones I wanted! All in all I bought approx another 12kg live rock!
So using the one I bought online as the base rock, I have stacked the top with all the proper "LIVE" rock most of which is covered in life including loads of Mushrooms, featherdusters, a couple of small clams/oysters and even a few small starfish! So far so good...
I am not trying to put Live Rock UK down at all as I'm sure others may get much better pieces of rock and are delighted with what they receive but these are my opinions from my own experience so personally I would recommend hand picking/buying your live rock (if possible) as although it may cost a little bit extra in comparison to online, at least you get see exactly what you are buying and don't have to rely on somebody else choosing the main bilogical filteration of your marine tank for you!!!
Hope this at least helps others when it comes to purchasing their live rock!
PS. My live rock rubble is absolutely CR*P!!

I have not seen a singe dot of purple or any other form of life on it!!! Looks just like ordinary ocean rock that has been broken down to smaller chunks. I think I would have been alot better off getting a large piece of live rock from my LFS and just breaking it into smaller pieces using a hammer to put into my filter compartment in my refugium!!!