Yes and yes, just as in the rest of Britain.
Stones/pounds are not taught in schools now, as far as I know, and certainly never in science and engineering. It is still quite common, especially among older people, to talk about your weight in stones and pounds (but not as just pounds) and sometimes to buy some food, etc, in pounds and ounces. The metric system is much more widely used. Pubs sell beer in pints, though - that is an 20 fluid ounce Imperial pint, not the American and former west of England 16 fluid ounce short pint).