A BBC One dramatisation of actor Ruth Wilson”s family history begins filming in Belfast today.

The story unfolds across two continents over three time-frames with the Northern Ireland city doubling for London and India.

Wilson will play her own grandmother, Alison, as she discovers upon her husband”s death that he had been leading a secret life.

The three-part drama is written by Anna Symon and produced by Snowed-In Productions; the company”s Ruth Kenley-Letts and Neil Blair executive produce.

Snowed-In was founded in 2014 to work alongside JK Rowling”s Bronte Film and Television, but focusing on drama that is not based on the author”s books.

Belfast is currently hosting the eighth and final series of Game of Thrones at Titanic Studios, while US TV series Krypton, that wrapped in late March, was the first major production to be housed at the newly-developed Belfast Harbour Studios.

Photo via Getty Images/WireImage/Mike Marsland.