Yeoman's (www.yeomansoutdoors.co.uk) are selling the 2012 Montana 6P for £379.99 (RRP: £749.99). They also have a 10% off code (YEOAFF10) bringing it down to £341.99. I rang Yeoman's to confirm they had stock.
Next I called in to the Go Outdoors store and asked the manager if he could price match the £341.99 and give me the 10% off extra which they advertise. He checked the Yeoman's deal/discount code online and agreed to it... £341.99 - 10% = £307.80.
The 6P is a great 6 berth tent and always scores very highly in reviews on family tents.
Don't get confused with the basic Montana 6 version though advertised at £299.99 (still a very good tent) - the Montana '6P' stands for Premium and is more waterproof (Hydrostatic Head of 5000mm), includes tinted windows, extra corner windows for a panoramic view and a trolley bag with wheels. It comes in green too which is a nicer colour than the Montana 6 Mocha colour (only my opinion though)
I won't include the whole spec but you can find more details and a video about the 6P on Outwell's site at:http://www.outwell.com/en/Products/Tents/Premium/Montana6P.aspx
*** PS: If you want the carpet to go with it - I also tried to get the 6P carpet thrown in for £350 all-in but he wouldn't do it. He did agree to price match http://www.outdoorworlddirect.co.uk
at £69.99 delivered and give me 10% off making £62.99 - still a pretty good price though as Go Outdoors currently advertise it for £101.70. ***