Leaflets and posters are being distributed around the area, featuring pictures of the couple, along with a picture of their red Citroen C3, which may have been used to travel around.

BBC: Debbie Starbuck

It includes a "powerful" cinema advertisement, along with posters and leaflets, a police spokesman said.

BBC: Part of the new campaign's poster

The campaign is being delivered through radio adverts, posters, leaflets and an advert on Facebook.

BBC: Illegal cigarettes find at Southampton Container Port