Shipping From China
It’s a long way from China to the UK, 7775 km if you were able to go direct. However, most freight making the journey ends up in a container making the 30 / 40 day transit on the back of a container ship.
The routing the vessel takes has massive implications on the time taken to arrive to the UK along with the emissions produced.
The usual route heading through the Gulf of Aden and then using the Suez Canal as a way into the Med cuts out ten days sailing and around 9000 km,