Asda are selling diecast 1/48 scale Eurocopter EC135 in a variety of finishes.
Its definitely 1/48 because I measured it in shop with a borrowed ruler and then came home and went to the Eurocopter website for dimensions.
The EC 135 looks like this:
I'm thinking about getting one, if you're overseas and want one PM me quick - I take PayPal and will be happy to get you one for cost+postage+PayPal fee.