Conjoined twins Rosie and Ruby Formosa separated

Rosie and Ruby Formosa underwent emergency surgery the day after their birth

The mother of conjoined twins has described her joy after a successful operation to separate them.

Rosie and Ruby Formosa were born joined at the abdomen and sharing part of the intestine.

The twins, now 12 weeks old, were operated on at London's Great Ormond Street Hospital the day after they were born on 27 July.

Their mother Angela, from Bexleyheath in south-east London, said the "smiling bubbly babies" were doing well.

The twins needed an emergency operation to separate them.

Mrs Formosa, 32, said finding out the twins were joined had been a shock after her "textbook" pregnancy with first daughter Lily, now aged five.

"At an early pregnancy scan they said the twins looked very close together so I went to King's College for another scan," she said.

"Between 16 and 20 weeks we found out that they were joined - I didn't know what to think, I was shocked and I felt sad.

"We didn't know what to expect until they were born - the doctors could not tell where they were connected.

"They decided to deliver them early at 34 weeks," she added.

"We expected them to be really tiny but they weighed 5lb 3oz (2.5kg) each, so that was quite good actually."

Talking about the operation, their taxi driver father Daniel Formosa, 36, said: "It felt as if we were just signing a life away.

"But if they didn't operate they wouldn't have survived."

The twins were operated on the next day by a team led by paediatric surgeon Prof Agostino Pierro.

He said the girls had been joined by the abdomen at the level of the umbilicus.

"The operation to separate the twins had to be performed as an emergency because of an intestinal blockage," he said.

"We are delighted with the outcome of the operation.

The twins were operated on by a team including surgeon Edward Kiely and Prof Agostino Pierro

"The babies will need further treatment in the future, but we expect that they will both be able to lead happy and normal lives."

Mrs Formosa said she and husband were happy and relieved to have the girls at home.

"They are really well, they are putting on weight," she said.

"They are normal bubbly babies who are starting to smile and cry when they want something."

She added she was incredibly grateful to the hospital's staff.

"What they have done for my two girls is amazing. When I was pregnant they were saying that the survival chances were quite low.

"For them to have been operated on and doing so well - it is amazing."