Stellamodels in Hong Kong have the Avante 2011 kit for $348 + shipping ($67 for HK post air parcel to the UK), so $415 in total, which is around £250
http://www.stellamodels.com.hk/58489...sc-p-5416.html
I have used Stellamodels many times, and their service is first class, delivery usually only takes a few days from ordering. I would advise against going for the EMS shipping option though, it costs more, and may arrive slightly quicker, but there is a much greater chance of the package being processed by Parcel Force when it gets to the UK, and they will charge you a handling fee. Regular airmail delivery often goes through customs with no problems/delays at all, even with large kits (just like my TRF503 buggy kit did a few weeks ago
).