Conjoined twin boys, Hassan and Hussein Benhaffaf, born at London's University College Hospital, are expected to undergo surgery to try to separate them in coming months.

The parents of conjoined twins born before Christmas, yesterday unveiled their sons to the world as they posed for photographs before being discharged from Cork University Maternity Hospital where they've been undergoing treatment for the past few weeks.

Their parents, Azzedine and Angie, paid tribute to the twins, calling them "two little fighters".

Although no disclosures have been about how the twins are conjoined have been made, yet last week Edward Kiely, consultant paediatric surgeon at Great Ormond Street, cited that, if all went according to plan, the children would return to hospital later in the year for surgery.

In addition he claimed, "The surgical team here is the most experienced in Europe at assessing and, if necessary, separating conjoined twins".

"We again hope that our privacy at home will be fully respected as we enjoy what will be a very special time for us as a family before we return to London for the boys' separation later this year", the couple quoted after their newborns arrive home.

The figures claim that conjoined twins are extremely rare; occurring once in every 200,000 births when a single fertilized egg splits to form twins. However, incomplete splitting results in conjoined babies.