Grey duo Smith and Butler scoop Aerial

The Grey London creative team Geoff Smith and Simon Butler has won March's Aerial Award for best radio ad.

The "Valentine messages" spot for Women's Aid was judged the best radio ad of the month by the Rainey Kelly Campbell Roalfe/Y&R creative director, Pip Bishop.

The winning spot features a series of voicemail messages that grow increasingly abusive as the spot continues.

Bishop said: "This ad cleverly uses Valentine's Day messaging to highlight the fact that for some 500,000 women, it is just another day of verbal, mental or physical abuse."

The ads can be listened to at the Aerial Awards website,