The changes, which began to be phased in last year, will mean that:
Text and picture health warnings along with advice on quitting smoking will cover 65% of the front and back of packs
Health warnings will appear at the top and side of packs
Brand names will be in standard type face, colour and size
A standardised shape, colour and method of opening the packet
A 'duty paid' stamp to show that the pack is not counterfeit
Cigarette packs are standardised in size and colour
An end to cigarettes and hand-rolling tobacco with characterising flavours, such as fruits or chocolate, although menthol tobacco and cigarettes won't be prohibited until May 2020
A minimum pack size of 20 cigarettes and 30 grams for hand rolled tobacco
Leading tobacco manufacturers mounted an unsuccessful legal challenge to the changes. And The Tobacco Manufacturers' Association, which was not a party in the case, said it was disappointed with the outcome.
In May last year, the European Court of Justice ruled that the challenge was without foundation.
Hazel Cheeseman, director of policy at Action on Smoking and Health (ASH), is not anticipating overnight results, but says indications are that the changes will curb smoking in young people. "We would expect to see an effect on young people's uptake over time," she says.
Ms Cheeseman points to the example of Australia, which led the way in standardised packaging around the world. "In Australia, there are some good early indications that removing the branding is having the effect desired," she tells us.
New regulations governing the sale of e-cigarettes are also coming into effect next month.
Products containing over 20mg per ml of nicotine will need to have a medicinal licence
An end to the advertising, promotion or sponsorship of electronic cigarettes and re-fill containers on the internet, TV and radio
A requirement to make products child and tamper proof
Ensuring that packaging includes a health warning covering 30% of the surface
A statement saying: 'This product contains nicotine which is a highly addictive substance'
Information on the product's nicotine content to be declared on the label
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