Hi. Yes - I've got the BG one and went for the 30amp - just in case it will work on a future car even though the Phev can't take that power. Mine has a tethered Type 1 cable which obviously fits the PHEV (and should also fit a Prius or Leaf) but note that Type 2 (Mennekes) is actually the standard that seems to be adopted across Europe, so future cars are likely to be Type 2 and therefore couldn't use my charger, unless there is an adaptor?? I do like the tethered cable at home though as it is so quick to use and no one can nick it. I believe there is an option to have a Type 2 30amp charge point without a tethered cable (you'd need to check with BG) in which case you would need to order a cable (as below) and then be pretty future proof.
I have just ordered a cable which will fit Type 2 charge points in case I manage to find somewhere to plug in to when I'm out. I believe the really fast chargers have tethered cables, but with the vast majority of public charge points you need to provide your own (and they will be Type 2 sockets) - not sure what stops someone making off with your cable though (and mine cost £170!).
I hope that is clear - I didn't fully understand the position myself until yesterday, so not sure I made the right decision on my charge point in terms of future-proofing - but it works and am very happy with it (and the car!).
Do note - you do not need to be a BG customer to get the free offer. There are loads of other companies offering the chargers and several makes which you may want to research. I thought BG are recommended by Mitsu and they are a big enough company to sue if the place burns down!
See my pics on the "UK charging and solar thread" or words to that effect.
Cheers
H