Alternatively, mash low, lots of caramel malt and an attenuative yeast.
Have a 3%er on in the shop at the moment from a demo several weeks back. 2700 g ale malt, 500 g crystal malt, mashed at 63-64 deg, about 20 IBU of Target and Fuggles, fermented with Mangrove Jack British Ale yeast - fairly...