Patients in west London hold one of the worst records for failing to attend hospital appointments.
According to the data from NHS England, patients missed 110,702 first appointments at hospitals across west London, as well as 240,503 follow-up appointments, in the year to September 2015.
Patients also failed to turn up for arranged admissions on 8,695 occasions.
Among the worst in England for people failing to attend first appointments were London North West Healthcare (15%), Imperial College Healthcare (13.9%), and Chelsea and Westminster Hospital, which now also covers West Middlesex Hospital in Isleworth, (11.7%).
For subsequent appointments, one in six were missed at London North West, which covers Central Middlesex Hospital in Park Royal; Ealing Hospital in Southall; and Northwick Park and St Mark’s in Harrow; in the year to September 2015 - the highest rate in England.
In addition, the number of people not turning up for arranged hospital admissions in west London hit its highest level in six years, at London North West Healthcare, The Hilingdon Hospitals - Hillingdon Hospital and Mount Vernon Hospital - and Imperial College Healthcare, which covers Charing Cross Hospital; Hammersmith Hospital; Queen Charlotte’s and Chelsea Hospital; St Mary’s Hospital and Western Eye Hospital.
At Imperial College Healthcare, the number of missed admissions was up 80% compared to the year before.
The number of patients failing to turn up for arranged hospital admissions hit 121,782 in the year to September 2015, a 9% rise from the previous year, and the highest level since 2010.
Across England, patients missed 5.5 million first and follow-up appointments at hospital trusts across the country in the year to September 2015.