Craft soft drinks brand Franklin and Sons is moving into the premium mixer market.

It forms part of the Global Brands portfolio and was launched last May in response to demand for better quality adult soft drinks.

The four new additions to the range comprise a Natural Indian Tonic Water, an Original Ginger Ale, a Sicilian Lemon Tonic and a Natural Light Tonic Water.

The drinks are made with Staffordshire water, root ginger extract, Sicilian lemon and natural cinchona bark from Ecuador.

"Franklin & Sons is a brand rooted in its Victorian heritage and has a passion for original, great tasting drinks," said marketing director, Simon Green.

"With this latest range of premium tonics we are establishing links in the brand's home city of London as well as the best bars across the UK and further afield."

All four flavours come in single-serve 200ml glass bottles to, "ensure freshness and fizz."