| Entity,Code,Year,GHG emissions (gCO2e/km) | |
| Black cab (taxi),,2018,211.76 | |
| Bus,,2018,104.71 | |
| Coach,,2018,27.79 | |
| Domestic flight,,2018,254.92999999999998 | |
| Eurostar (international rail),,2018,5.97 | |
| Ferry (car passenger),,2018,129.518 | |
| Ferry (foot passenger),,2018,18.738 | |
| Large car (diesel),,2018,209.47 | |
| Large car (hybrid),,2018,131.77 | |
| Large car (petrol),,2018,282.95 | |
| Large car (plug-in hybrid electric),,2018,77.31 | |
| Large electric vehicle (UK electricity),,2018,66.88 | |
| Light rail and tram,,2018,35.08 | |
| London Underground,,2018,30.84 | |
| Long-haul flight (business class),,2018,434.46000000000004 | |
| Long-haul flight (economy),,2018,149.81 | |
| Long-haul flight (economy+),,2018,239.7 | |
| Long-haul flight (first class),,2018,599.25 | |
| Medium car (diesel),,2018,170.61 | |
| Medium car (hybrid),,2018,108.95 | |
| Medium car (petrol),,2018,192.28 | |
| Medium car (plug-in hybrid electric),,2018,70.83 | |
| Medium electric vehicle (UK electricity),,2018,53.17 | |
| Motorcycle (large),,2018,135.01 | |
| Motorcycle (medium),,2018,102.89 | |
| Motorcycle (small),,2018,84.45 | |
| National rail,,2018,41.15 | |
| Short-haul flight (business class),,2018,233.6 | |
| Short-haul flight (economy),,2018,155.73000000000002 | |
| Small car (diesel),,2018,142.08 | |
| Small car (hybrid),,2018,105.2 | |
| Small car (petrol),,2018,153.71 | |
| Small car (plug-in hybrid electric),,2018,29.35 | |
| Small electric vehicle (UK electricity),,2018,45.67 | |
| Taxi,,2018,150.18 |