Ice cream sales have shot up by 345% compared to the same period last year, with popular items including the triple-layered Kream Ball dessert and the 79p Streetwise Sundae.
The programme will see a company director or chief executive spend time with one of their minimum wage workers followed by a week living on the same budget.
A snapshot taste test of coffee from the big chains Pret, Costa, Starbucks, Caffe Nero and the cafes at Marks & Spencer, was carried out by consumer champion Which?
The results of an audit and telephone survey showed the number of companies displaying their ratings has increased to 52% in England; 47% in Wales and 57% in Northern Ireland.
The new café and food store will be situated within the Lord Rogers-designed NEO Bankside in Southwark, just behind Tate Modern, close to the Thames Pathway.
A key feature of the new food court, which is operated by SSP, is a selection of street food pop-up offerings, showcasing the best of the local culinary scene.