EVERY day for the next month Wood Green actress Lizzie Grace-Williams will age by 56-years.

Not literally, of course - the 24-year-old is playing the part of the ageing, 80-year-old Granny Deedee in Back to Blackbrick at this year's Edinburgh Festival Fringe.

"I have always wanted to play an older person," admits the Mountview Academy of Theatre Arts graduate.

“It was a big challenge for me to be Granny Deedee, the physicality was challenging."

In Back to Blackbrick, Granny Deedee's husband Kevin is losing his memories as he struggles with dementia.

When Kevin gives his young grandson Cosmo a mysterious key, Cosmo travels back in time to a place called Blackbrick where he meets his grandfather as a young boy.

Based on the novel by Sarah Moore Fitzgerald, Patch of Blue Theatre Company has transformed the novel into a play directed by Alex Howarth, who also trained at Mountview.

The show, which runs for 26 nights in Edinburgh debuted at the Festival Fringe on Wednesday, August 5.

And once the Back to Blackbrick team are back in London the play is set to continue at the Arts Theatre in Leicester Square.

“It is going really well, we are getting some really good audiences in and it seems to be getting really good feedback," says Lizzie, who works at The Yard coffee shop in Palmer's Green in between acting jobs.

She continues: “It was a little bit nerve wracking at first, we did make a few last-minute changes. It is ok because it is something you really look forward to doing."

The story combines an exciting adventure tale with a moving exploration of Alzheimer's disease through a teenager's eyes, and Lizzie says it's important to help spread awareness of the condition.

"We had Dementia Friends come in and do a great talk with us which was really useful because we need to do your research so you can out on a truthful performance," explains the performer, who grew up in Hitchin.

She adds: "It is nice to get the message out there about dementia and Alzheimer’s. I think it is quite a big topic at the moment. It has definitely been very difficult but also very moving."

A regular visitor to the Festival Fringe, Lizzie is enjoying her first stint performing in a month-long production.

And although her accommodation is a little cramped - she is sharing with 19 other actors - the actress is having a great time.

She says: "I go every year, I love it. It has got a really good buzz. For the past few years I have just come up as a holiday.

"I really love that it just takes over the whole city. It is on for the whole month and there’s so many shows on and everyone’s so supportive."

Back to Blackbrick is on daily at The Cellar, Pleasance Courtyard, Edinburgh Festival Fringe, until August 31 at 3.30pm. Details: 020 7609 1800, pleasance.co.uk