Just got off the Gondola Website with this deal.
Add 2 Crates (6 Bottles) and 4 Seperate 750ml Bottles to take you over £100 purchase value. Then add the £40 off Voucher Code (GEN40).
You now have 16 Bottles of this superb wine for £69.83 - £4.36 / Bottle. Now take into account the £6 Quidco - £63.83 between 16 bottles is £3.98 per bottle.
The cheapest I can find elsewhere at the moment is £4.83 at Asda. Just depends if you have the cash and want 16 bottles - Oh, OK then!
Edit: Removed Quidco from the equation - thanks