But she said more evidence was needed before the HFEA recommended a move to single embryo transfer.

BBC: IVF 'should use one embryo'

Dr Diane De Neubourg, from the Centre for Reproductive Medicine, Antwerp, presented work showing that single embryo transfer produces babies that are healthier than those born after multiple implantations.

BBC: NEWS | Health | IVF multiple births 'drain NHS'

She said she would recommend all European countries introduced the single embryo transfer as standard for women in this group - under 36, in their first or second cycles who have good quality embryos.

BBC: IVF 'should use one embryo'