Includes Heating and Hot Water, plus installation by a British Gas Engineer.
This is my first deal for a little while now... Been waiting for this to drop to this price since Christmas.
20p more expensive than the Argos deal already posted ... but you get a £15 Maplin voucher to spend between 18th April 2017 and 27th April 2017 for spending over £100.
Also 4.4% possible cashback through TopCashBack.
Amazon has also price matched for those interested, but without the voucher.