I need a drill, ideally 22mm or 7/8" but up to 23mm would be acceptable.

If I don't find one here I'll just buy this one:

BLACKSMITH DRILLS HSS DRILL BITS - ALL METRIC SIZES! | eBay

But one with a morse taper would be nice. I need to drill a hole about 120mm deep through aluminium, so wood drills are no use and boring it doesn't seem practical.