MPs who voted in favour of the assisted dying bill have raised concerns about parts of it and want to see changes before giving it final approval. Some are worried about the bill's provisions to allow doctors to raise assisted dying as an option without the terminally ill patient having asked for it first.

At least 36 MPs who voted in favour of assisted dying have indicated that they could change their minds at a later stage, new analysis suggests.

British lawmakers are set to decide Friday whether to legalize assisted dying, a contentious proposal that would make the United Kingdom one of a small handful of nations to allow terminally ill people to end their lives.