The Parliamentary and Health Service Ombudsman has published more than 200 summaries of investigations it carried out between July and September 2014 - 16 of which are in Greater London, the second highest region in England.
The Ombudsman Service investigates complaints about the NHS in England and UK government departments and their agencies.
Around three quarters of staff at the London Ambulance Service are expected to go on strike today between 7am and 11am.
The action is part of an an ongoing row over pay. Four weeks ago 77% of staff joined the picket line in protest at not receiving a recommended 1% pay rise.
LAS says contingency plans are in place to provide a service for London during strike action. The plans include support from the police and military personnel. Ambulances will only be sent to cases that most seriously need paramedic assistance.
If a major incident in London happens during strike action, staff have agreed to return to work.
London North West NHS Trust had the country's worst waiting times for two weeks running in October. More than 3,500 patients had to wait for more than four hours to be seen.
According to an analysis of NHS data by London Assembly Labour Group Health Spokesperson, Dr Onkar Sahota AM, the system is 'breaking under the strain' since the closures of Hammersmith and Central Middlesex A&Es two months ago.
The Ministry of Defence has confirmed it will provide military drivers to support London's ambulance service during a strike by NHS staff. The Unison union says its members will walk out for four hours on Monday and ambulance staff will be asked to refuse overtime work from Tuesday to Friday.
We can confirm that the Ministry of Defence is providing support to the Department of Health during the 13 October industrial action by some trade unions. This assistance involves the provision of military drivers to support the London and the North West Ambulance Services.
Protests are planned across London today to protest against the Transatlantic Trade and Investment Partnership deal between the EU and USA. There is concern that the deal David Cameron is pushing for will bring increased privatisation to the NHS.
36% of Londoners said that private healthcare providers have too much influence over the NHS according to a YouGov poll. Campaigners will be asking people who are worried about this to write to their local MEPs against the TTIP. The deal is said to force the NHS open to competition from American private healthcare providers.
Just under a third of NHS Trusts throughout the capital have failed to reach A&E targets for four weeks running, new figures have found.Read the full story ›
London is to be home to the world's biggest "centre of excellence" for people born with heart problems after health officials gave the go-ahead for a new specialist hub. The new specialist cardiac centre will be located at St Bartholomew's Hospital in central London.
Anne Rainsberry, regional director of NHS England London, said: "This programme is a brand new way of delivering care and a once-in-a-lifetime opportunity to improve services for today's patients and future generations.
"These 'centres of excellence' should also position London as a leader in research into cardiovascular disease and cancer, attracting some of the brightest and best clinicians and academics to work and study in the UK."
Black and Asian patients here are forced to wait a year longer on average because of the low proportion of donors from similar backgrounds.Read the full story ›
From today, services at Chase Farm and Barnet hospitals will be run by the Royal Free London NHS Trust.
Health Secretary Jeremy Hunt approved the north London takeover move last week.The Trust says it'll improve efficiency but campaigners are concerned the merge will mean land on the Chase Farm site is sold.