Students at a Norwich school have been named double winners in a competition challenging entrants to design a mouth-watering sandwich.

The teams from Norwich High School for Girls beat competition from schools and colleges around the region to be crowned winners in two categories of Subway's Design a Sub competition, winning the overall award and a second for Best Social Media Strategy.

Now in its ninth year, the challenge tasks schools to come up with their own design and marketing campaign for a six-inch sub or flatbread.

The team from the Norwich school designed a sub called Eat Equilibrato, consisting of rotisserie chicken, tomato, lettuce, cucumber, cheddar cheese and barbecue sauce on nine-grain wheat bread.

The winning team – Willow Thicks, Hannah Dye and Sophie Mann – has won £1,000 worth of Amazon vouchers.

A second team won the Best Social Media Strategy prize for their Caesar Pleaser sub.

City of Norwich School students were named runners-up in the Design a Sub contest, with their offering, American Deli.