There is no liability for an omission in this country as a general rule
In some countries, such as France, there is a "good Samaritan Law" which enforces ordinary citizens to act
There will be a duty in the UK in a number of situations
Statutory duty
A legal obligation, e.g. the RoadTraffic Act 1988 requires providing a specimen of breath if stopped by police, and informing police of an accident
Duty by relationship
A duty owed to someone you have a relationship with, e.g. parent to child, partners, siblings
Duty by relationship
Evans case - sister failed to get medical help for younger sister who had a bad reaction to drugs, convicted of grossnegligencemanslaughter
Duty created by voluntary responsibility or as a carer
Acceptingresponsibility to care for someone, e.g. Stone & Dobinson case - failed to call for medical help for infirm sister, convicted of grossnegligence manslaughter
Contractual duty
Duty of care owed through employment, e.g. lifeguard to swimmers, doctor to patients, gatekeeper to roadusers
Contractual duty
Holloway case - electrician left exposed wires, failed to check faulty circuit breaker, family member killed, convicted of grossnegligencemanslaughter
Superveningfault
Failing to put right a chain of events one has started, e.g. R v Miller - tramp discarded cigarette, let fire spread, convicted of arson
Public duty
Duty owed by police, fire service, paramedics etc. as part of their public role
Public duty
Dytham case - policeman witnessed man beaten to death but drove away, breachedpublic duty