Increased security is needed to stop drugs from being smuggled into English and Welsh prisons, a former chief constable is expected to say later.
More than £80m is to be spent on new technology and better security to stop drugs being smuggled into English and Welsh prisons, following a review.
David Blakey's report is likely to call for greater use of equipment to detect and bar mobile phones, used by dealers.
Equipment to detect and bar mobile phones, used by dealers, is to be introduced by the Prison Service.
It will likely say that drugs in jails cannot be eliminated, but that further steps should be taken to limit supply.
Chairs that scan for goods being smuggled inside bodies are to be introduced in prisons by next March.
The four-month review also found some corrupt prison officers were being paid by prisoners for phones or drugs.
'Betrayal of society'
Justice Secretary Jack Straw warned these prison officers they would be caught and jailed.
He said: "It is a betrayal of society and it is also treacherous to colleagues because with corruption and the smuggling of drugs by prison officers goes major problems of disorder," he said.
"Substantial amounts" of all types of drugs got into prisons, the review by former chief constable David Blakey said.
Methods included visitors smuggling the substances and disguised packages being thrown over prison walls.
The report commissioned by Mr Straw also suggested improving security on prison visits.
Prisoners will wear a one-piece suit with no pockets during visits and there will be more use of "closed visits" where glass separates the prisoner from the visitor.
Search dogs
Mr Blakey said there should be greater examination of prison bank accounts to provide intelligence on drug dealing behind bars.
The report also suggested a review of Rule 39, which prevents letters from lawyers being opened by prison staff.
Mr Blakey suggested that the Law Society, which represents solicitors, should consider a registration scheme in a bid to stop drugs from being smuggled in this way.
The way search dogs are used should be reviewed, the report said.
And it recommended and the creation of a new research and development department to draw up plans for greater use of technology to combat drugs.
The ratio of inmates testing positive is falling, but anecdotal evidence suggests the problem is getting worse.
The ratio of inmates testing positive is falling, but anecdotal evidence suggests the problem is getting worse.
Official figures show that drug seizures rose 12% in two years.
Official figures show that drug seizures rose 12% in two years.
Prison visits
According to BBC home affairs correspondent Danny Shaw, Mr Blakey is thought to support the use of equipment to detect and bar mobile phones - used by prison drug dealers.
A highly-sensitive metal-detecting chair, which prisoners have to sit in, is already being used in some jails.
The report also looks at the arrangements for prison visitors.
Ministers have indicated they may increase security on visits to stop drugs being passed to inmates.
The government estimates that 55% of prisoners are considered to be problem drug users when they are admitted.
The government estimates that 55% of prisoners are considered to be problem drug users when they are admitted.
England's largest jail, Wandsworth, has estimated that about £1m worth of drugs was trafficked within the prison last year.
England's largest jail, Wandsworth, has estimated that about £1m worth of drugs was trafficked within the prison last year.
Have you been affected by the issues in this story? Can these measures tackle drug smuggling in prisons? How bad is the problem of drugs in prisons? Send us your comments using the form below.
Have you been affected by the issues in this story? Can these measures tackle drug smuggling in prisons? How bad is the problem of drugs in prisons? Send us your comments using the form below.
