Brighton MP Caroline Lucas is to listen to arguments put forward by a group in favour of using cannabis for medicinal purposes.
She speak at tonight's launch meeting of the United Patients Alliance and hear evidence about why the drug can be of benefit to those with health issues.
There is an ongoing debate about the use of cannabis to treat conditions such as multiple sclerosis, and provide pain relief.
Guest speakers and medical cannabis patients will talk at the event on how the drug has improved their quality of life. It takes place at the Brighthelm Centre at 7.30pm.
Ms Lucas, the Green party MP for Brighton Pavilion backs a carefully regulated assessment into cannabis being permitted for medicinal purposes.
She said: "It’s vital that drugs policy is driven by an evidence based approach and I look forward to hearing more about the evidence about the medicinal benefits of cannabis, which has looked at the experience of some states in the US, where there has been regulated supply to meet medical need under strict regulation."
Also speaking at the event, Professor David Nutt, who has campaigned for Dutch style cannabis cafes. He thinks if they were introduced, it would lower the nation's alcohol problem.
Hampshire Police have uncovered a suspected cannabis factory in the New Forest.
Two men, aged 25 and 26, were arrested on suspicion of cultivating cannabis and are currently in police custody.
The discovery was made at unit on Millstream Industrial Estate on Christchurch Road in New Milton.
A large number of cannabis plants that covered two floors of the unit were found.
Acting Inspector Simon Flint said, "This appears to have been a large scale operation based on the number of plants at the premises."
Detective Inspector Gavin Patch says it's one of the largest sites Sussex Police have seen for some time.
More than a thousand cannabis plants, with a potential street value of at least a million pounds has been seized in Sussex.
Two men and two women were arrested at the property in North Chailey at around 9 o'clock this morning.
Police are now examining the home and outbuildings at the isolated farm. Detectives say it is one of the largest sites they have seen for some time.
Around 70 cannabis plants were found in a bedroom at a house in Brighton as officers carried out immigration checks.
The discovery was made at the house on St James' Street Mews.
A 33-year-old Algerian man, who had over stayed his visa, was arrested.
Sussex police are now investigating the matter further and questioning the man.
Richard Lederle, head of Kent & Sussex Home Office Immigration Enforcement team said:
This was an excellent piece of work by all officers involved. Not only did they arrest an individual who was in the UK illegally, but they also prevented a quantity of Class B drugs making it onto our streets.
This was the latest in a series of operation tareting illegal immigration in Sussex, and for those who are living and working here illegally there is no hiding place.
A 25 year old man has been arrested after a cannabis factory was found by fire crews tackling a blaze in Worthing.
Up to thirty fire fighters were at the property on Salisbury Road - when they discovered equipment used to grow the drug. Neighbours say they're "stunned". Charlotte Wilkins Reports.
Police are looking for a man in connection with what is believed to be the biggest ever cannabis factory found in Kent.
Officers uncovered the operation in August of this year, with around 6000 cannabis plants being found at the derelict building in West Hill.
The street value of the drugs was £4 million.
Officers believe the man they want to talk to uses the name Stefan Nardi, claims to be 37-years-old and Italian.
He is also thought to have links to the Deptford area of London.
Two nights ago we revealed that while millions of pounds are spent combating the cultivation of cannabis the seeds needed to grow the drug are openly on sale at shops across the south-east.
As a result of our report a leading MP is calling for the sale of those seeds to be outlawed. At the moment a legal loophole means they can currently be bought and sold quite legally...on the understanding that they will not be grown.
But Sir Roger Gale, the MP for Thanet North says it's an 'outrageous' situation and is urging the Home Secretary to take action.
Thousands of cannabis plants have been discovered by Kent police at two properties in the Medway towns.
450 cannabis plants were found in a disused fish and chip shop on June 6th. This follows the discovery of 800 plants on the 24th May.
The plants are believed to have a street value of £500,000.
One man has been charged with the production of a controlled Class B drug and two others have been arrested.
A 43-year-old man has been arrested on suspicion of possessing cannabis resin with intent to supply and a 34-year-old man have been arrested on suspicion of possessing cannabis resin.
The men are in custody at Tonbridge police station and will be interviewed today.