POWERFUL drama National Treasure, which was partly filmed in Bradford, was a top winner at this week’s Royal Television Society Awards.

The drama, starring Robbie Coltrane and Julie Walters, about a popular celebrity facing sexual assault allegations, was Channel 4’s most watched drama of 2016. Filmed with investment from Screen Yorkshire’s Yorkshire Content Fund, locations included Bradford’s City Hall, magistrates’ court and City Park, as well as Leeds, Wakefield, Hull and Scarborough.

National Treasure, praised by the judges for its “brilliant writing and stunningly crafted direction’’, beat competition from London Spy and Thirteen to win the RTS Best Mini-Series award. Robbie Coltrane took Best Actor and Julie Walters received the Lifetime Achievement Award.

Other Yorkshire dramas winning RTS awards included Happy Valley, which won Best Drama, and Emmerdale, which won Best Soap and Continuing Drama.