Almost three-quarters of Britons support a change in the law on the right to die, an opinion poll has found ahead of the first parliamentary test for legislation on the issue.

The ComRes poll for ITV’s Tonight programme found that 70 per cent could support allowing assisted dying under the measures proposed in the Assisted Dying Bill being promoted by former lord chancellor Lord Falconer of Thoroton.

The legislation, which will have its second reading debate in the Lords on Friday, would enable people with six months to live to be given assistance to end their life, as long as two doctors approved.

The poll found 70 per cent would support allowing assisted dying under those rules, with 12 per cent disagreeing and 18 per cent saying they did not know.

Just 10 per cent said they would oppose allowing assisted suicide under these rules, with 73 per cent disagreeing.

But some 47 per cent said they believed legalising assisted suicide would “inevitably” lead to some vulnerable people opting to end their lives to avoid becoming a burden on their loved ones, with 26 per cent disagreeing and 28 per cent undecided.

ComRes interviewed 2,049 British adults online between June 27 and 29. Data was weighted to be representative of all British adults.The Tonight programme, Assisted Dying - For and Against is on ITV on Thursday at 7.30pm.