Chiltern Railways, proudly announced new trains will be running into Marylebone, will run on Hydrotreated Vegetable Oil (HVO) fuel, a renewable fuel that reduces carbon emissions and cuts pollutants such as nitrous oxide compared to conventional diesel – part of  the efforts to decarbonise Chiltern Railways but critically not electric. 

All (Class 68) locomotives in the new fleet will be fitted with automatic stop-start technology, reducing engine use while stationary, especially at terminus stations like Marylebone. For more info on the environmental pledges of Chiltern Railways, please check the link above. 

• All (Class 68) locomotives in the new fleet will be fitted with automatic stop-start technology, reducing engine use while stationary, especially at terminus stations like Marylebone.
• Introduce noise and vibration modifications to the (Class 68) locomotives engines to further reduce the impact on line side communities.
• and drivers will be be trained to minimise unnecessary idling and engine vibrations during layovers.

They have also committed to continue to engage with residents, local authorities, and stakeholders at stations like Marylebone, Aylesbury, and Birmingham to listen to concerns and provide regular updates on how these improvements will make a real difference. 

So this should mean at least some improvements in the noise and pollution issues for the residents of Blandford Square Estate along the side platform 5 & 6 in Marylebone Railway Station.