INVESTORS are poised for a new high on the London market after a company which specialises in cannabis unveiled plans to float.

GW Pharmaceuticals, the only company to legally develop and produce cannabis-based drugs, is seeking admission to the Alternative Investment Market at the end of June.

The Salisbury-based group was founded in 1998 and has already run clinical trials for treatment of multiple sclerosis, spinal cord injury and rheumatoid arthritis.

It wants to raise £16m from the listing to expand clinical trials and up its international reach.