Do you have to keep a clear gap behind a large lorry in Northern Ireland?

The Highway Code advises increasing your following distance because large vehicles can block your forward view.

Rules 221 and 222 explain that buses and articulated lorries may need extra room to turn and their drivers may not see a close-following car in their mirrors. Leaving a larger gap helps you see hazards sooner and reduces the temptation to overtake without a clear view.