Its not widely advertised in the shops but miele have their promotion on again for the free extended warranties. Note you MUST apply for the warranty and purchase your machine within their allotted time-scale (26th December to 29th February)
Here is a list of the various washing machineshttp://www.miele.co.uk/Products/ProductList.aspx?range=Washing%20Machines
Also note that there are no integrated models included on this promotion.
The Cheapest deals that I can find online seem to be for the Miele Prestige Plus at Pixmania. It works out at £460.10 with free P&P There is also 4% cashback available via quidco. And various codes available at the link below.http://www.hotukdeals.com/all/vouchers/new?expired=false&mf=31