Jodie Whittaker is terrible at keeping secrets.

Jodie Whittaker

Jodie Whittaker

The 35-year-old actress must have found it impossible not to utter a peep about the biggest kept secret in TV history, that she is to become the first female Time Lord in 'Doctor Who', as she has confessed she struggles to keep tight-lipped at the best of times.

On keeping quiet on roles, she said:"I'm a c**p secret keeper, so there would be no way I could put myself in that position."

Despite being bad at holding back information, the 'Broadchurch' star also had to remain silent during the press launch of new medical drama 'Trust Me' and not reveal details of her casting as Cath Hardacre, also known as Dr. Ally Sutton.

However, the hardest part of the role was learning how to say medical terms as she admits she even struggled with the elocution of the word medicine.

She told RadioTimes magazine: "The thing I struggled the most with and I think it comes from basically failing half my GCSEs and never doing A-Levels, is the pronunciation of medicine, even just as a simple word.

"With all the psychical stuff I could do, all the emotional stuff, I was kind of 'been there before' - I've played a few emotional characters."

Jodie previously revealed she was given basic medical training for the role.

The blonde beauty was shown how to do resuscitation on a dummy and was given the opportunity to cannulate - a technique in which a thin tube is placed inside a vein to provide venous access - the show's writer, Dan Sefton.

Asked if she was given medical training, she said: "Yes! The writer, Dan Sefton, who is also medical consultant and a doctor outside of TV production, showed us a load of stuff that he used when he was training people. He brought in the CPR dummy and showed us how to do a cannula and he, very bravely, let me put a cannula in his vein. I did it right, thank God! Also, YouTube is amazing. The genius of the internet is that you can basically sit at home and Google medical procedures, and TV shows such as 24 hours in A&E, which I watched hours of."