Measures to curb the sale of bomb-making chemicals will come into force on Sunday.
The decision to tighten restrictions on explosives follows the UK government’s commitment to review whether laws were tough enough to protect the public following the 2017 Manchester Arena terrorist attack.
The changes will introduce stricter requirements for reporting suspicious activity, including new obligations for online marketplaces.
Customer information, such as photo identification, will be recorded when regulated materials are sold to business users.
These new measures will help prevent dangerous controlled substances from falling into the wrong hands.
The changes, first announced in January, will come into force through an update to the Poisons Act.
Salman Abedi, a 22-year-old born and raised in Manchester, detonated a homemade bomb in his backpack in the Arena’s City Room foyer at the end of American pop star Ariana Grande’s concert on May 22, aged six. back.
The explosion killed 22 people and injured hundreds.
New restrictions on poisons will also be introduced as part of Sunday’s changes, the Home Office announced.
Additional substances have been added to the list of regulated poisons, including 2,4-dinitrophenol, also known as DNP.
The substance has claimed the lives of many young people in the UK, the Home Office said.
Other substances that should be added include zinc phosphide and methenamine, often used in fireworks.
The law update means it will be a criminal offense to sell these substances to the public without a valid license.
Security Minister Tom Tugendhat said: “The deaths of dozens of young people at the hands of criminals selling chemicals such as DNP is a tragedy.
“These new measures will help prevent dangerous controlled substances from falling into the wrong hands.”
Adrian Simpson, product consultant at the British Retail Consortium, said: “Retailers have an important role to play in identifying any suspicious customer activity when purchasing certain chemical products and will take additional steps to check the legitimacy of the purchase through more thorough identity checks.
“We welcome these new enhanced measures – retailers are vital to protecting the public by ensuring any changes are clearly communicated to their customers.
“They will provide additional information online to explain the risks associated with certain products.”
Andrew Quinn, head of food crime at the Food Standards Agency, said: “DNP can and does kill.
“That’s why we strongly support the Home Office in reclassifying DNP as a poison, and the police in tackling the criminals who supply this deadly chemical.”
Ministers consulted on the measures between December 2021 and March 2022, before introducing secondary legislation tightening controls on additional chemicals and poisons in early 2023, with the ban coming into force on Sunday.
The Poisons Act 1972 controls chemicals that can be used to make explosives and poisons, limiting the general public’s access to the most dangerous materials.
It permits a licensing regime for the purchase and use of controlled substances where there is a legitimate need and no safer alternative is available.