Allow widowed/single parents of British Citizens leave to enter the UK as an adult dependant; as long as the British child is ordinarily resident in the UK, able to support him/her financially and with suitable accommodation, without recourse to public funds.
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British Citizens are only able to sponsor a parent who requires long-term personal care due to illness, disability or age, amongst other criteria. For British Citizens (claimed through Ancestry or Descent), these rules can be traumatic, particularly if their parent is split from his/her children and left alone in another country.
Path to citizenship: Yes, 5 year route
Right to work: Yes, although not required for settlement. Financial requirement in the absence of work
Pay NHS surcharge: Yes