The rationale for the sugar tax, first devised by George Osborne when chancellor in 2016, is simple.
Ireland was due to introduce a similar tax today before the European Commission raised concerns that the levy might break EU state aid laws.
Whether or not the levy is passed on to consumers is up to manufacturers, but it is believed everybody will pay more. "Customer experience is more important than ever, so aim to offer innovative soft drinks, lower in sugar but perfectly served, to stand out from the crowd".
Professor Helen Stokes-Lampard, chair of the Royal College of Global Positioning System, said: "A tax on sugary drinks is a positive move forward in tackling this obesity epidemic". Those with 5-8g of sugar per 100ml will face a tax of 18p per litre.
Funds raised by the tax in England are to be put into sports and breakfast clubs at schools. While the levy on high-sugar drinks is a response to the obesity crisis - 20% of children in the a year ago of primary school in England are now obese - there is huge concern about children's teeth as well.
Well, according to the Treasury, over 50% of drinks manufacturers have already changed their sugar content, to ensure that they will not be subject to the extra tax.
These costs will also rise in pubs and restaurants.
Pure fruit juices and drinks with high levels of milk (75 per cent) are exempt from the tax.
A spokesman for the drink's maker A.G. Barr said: "Irn-Bru continues to be made using the same secret Irn-Bru flavour essence, but with less sugar. The British public are being treated like children", said the IEA's Christopher Snowdon.
In Ireland it has been estimated that the tax could bring in €30m in 2018 and €40m over the course of a full year.
In January, Dr Thow co-authored a paper for the World Health Organisation that highlighted the ways in which tax revenue from government policy could be redirected back to the community groups who need it most. The tax is expected to act on several fronts.
"I think that is a matter for parents to decide for themselves and the tax system should be there to raise the venue the country needs to pay its way".
Britain joins nations such as Mexico, France and Norway in applying a "sugar tax" aimed at reducing sugar consumption and combatting obesity in young people.