Appliances direct have the 9kg Graphite addwash machine for £499.
Samsung are now (from 1st Feb) offering £100 cashback taking end price to £399.
Delivery is £20 but sign up for Which trial for £1 and get a discount code for £20 effectively getting deliver for the £1 - just remember to cancel the trial within the month.
Quidco/TopCashBack 2.2% or as I did 2 miles per £1 via Avios or Gate365.
Washing machine code is WW90K5413UX
Offer is valid from the 1st February - 4th April 2017.
Purchase a qualifying Samsung Home Appliance between 1st February and 4th April 2017 to get a Cashback amount. Then between 21 and 60 days from the purchase of your qualifying Product all you have to do is apply for your Cashback amount (earliest 22nd February 2017).
Remember to keep your receipt safe as you will need to upload this in the form in order to submit a claim. Your claim has to be made between 21 and 60 days after the purchase date. The maximum value of the ‘Cashback amount’ is determined by the Product you purchase and could be up to £300 (please refer to the Cashback amount values for details).