Up until the 1850s, industry hadn't really spread out of the British Isles to anywhere else in Europe and your mission, if you choose to accept it, is keep things that way - prevent Continental Europe and the United States from industrialising for as long as possible.
Some initial ideas:
(1) Perhaps a longer Napoleonic Wars which cuts off contact between Britain and the continent (meaning that Britain's industrial secrets are better kept for longer),
(2) Europeans and Americans are just generally unlucky in finding coal deposits, or
(3) Protectionism remains widespread for longer, meaning that there is less investment by British businesses into Continental Europe.