The UK's Civil Aviation Authority (CAA) said London Luton Airport provides "poor" facilities for passengers who are disabled or face mobility challenges, with Bristol, Leeds Bradford and London Heathrow deemed as needing improvements.
The assessment was published after the regulator earlier in 2022 ran the rule over 16 of the UK's biggest airports, several of which it said provided sub-standard facilities for people with disabilities.
The CAA said it had in April 2022 "told those who were underperforming that it expected them to do more to improve the quality of assistance throughout the rest of the summer".
"Marked improvements" were subsequently recorded by the CAA in the peri0d to the end of October. Eight airports were deemed to provide "poor" facilities at the outset but by the end of the period only London Luton remained in that category, the CAA said.
But, it added, "only Aberdeen, Belfast International, East Midlands, Edinburgh, Glasgow and London City were rated as ‘very good’ for the whole period under review, with Liverpool and Newcastle rated moving from "good" to "very good".