Shares in Tango maker Britvic fizzed after City analysts predicted that the FTSE 250 company was well-equipped to ride out the Government's war on Britain's sweet tooth. The soft drinks giant is successfully fending off the threat of climbing costs through its savings programme and the impact of the upcoming sugar tax is likely to be "relatively minor", Morgan Stanley argued in a ratings upgrade to "overweight". The sugar tax will be introduced in April and companies are reformulating their fizzy drinks to help them squeeze under the threshold, as a 24p per litre levy for certain beverages looms. The Government hopes that the costs of the tax will be passed through the supply chain by drinks manufacturers and push up the price of high-sugar drinks to tackle obesity.