Personally, I'd suggest the Nikon D5100 over the Canon 60D:
http://snapsort.com/compare/Canon_EO...vs-Nikon-D5100
It's £600 with a kit lens (
http://www.warehouseexpress.com/buy-...-lens/p1525134) leaving you enough money to get a wide angle lens (I'd recommend this though it will push your budget a bit:
http://www.warehouseexpress.com/buy-...n-fit/p1007711)
Will it be as good as your Olympus? Well you're going from 35mm down to a cropped sensor, so you'll probably notice the difference in frame size. In terms of quality though, you'll probably see an improvement especially in low-light.