The Department for Transport (DfT) will spend £1.4 million to reduce bus pollution at a number of areas in the UK.
This announcement comes during the latest round of spending in the Clean Bus Technology Fund - which will cut harmful agents in 92 buses.
Brighton and Hove City Council will receive the most money (£750,000) to retrofit 50 buses, followed by councils at Sunderland City and Durham (£275,000 for 19 buses), Oxford (£199,995 for 11), Swale (£150,000 for ten) and York (£23,700 for two).
All of these authorities plan to use selective catalytic reduction technology, which is fitted to exhaust systems to reduce emissions.
Baroness Kramer: "I look forward to seeing the results of all the initiatives under the Clean Bus Technology Fund and I hope other local authorities will follow suit."
A previous round of spending saw DfT contribute £5 million towards 11 local authorities in August, while it also has a Green Bus Fund to help provide new low carbon vehicles.