Question to the Department for Transport:

To ask Her Majesty's Government how they are monitoring the UN International Maritime Organisation 2020 regulation on the reduction of sulphur levels for marine fuels for most coastal and international waters from 3.5 per cent by weight to 0.5 per cent.

Sulphur levels in marine fuels are monitored by carrying out sulphur inspections and sulphur sampling on board ships which call at UK ports. Fuel samples are drawn from ships and sent for testing to ensure that the sulphur levels are in compliance with EU and international requirements.