Two men have appeared in court charged with possession of class A drugs with intent to supply.
The Met Police's Central Task Force East, assisted by Thames Valley Police, found the drugs after executing a warrant at a property in Desborough Road, Wycombe, at 4pm on Wednesday.
Further quantities of class A drugs were found at addresses in Cornwall Close, Maidenhead, and Ilford, East London.
Alan Johnson, 53, of Janet Street, Poplar, and Elton Xhela, 33, of no fixed abode, appeared at Redbridge Magistrates Court on Friday. They are remanded in custody to appear at the same court on February 21.
A woman and three men have also been arrested and bailed, pending further enquiries. Their bail date has yet to be confirmed.
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The crash, which took place at about 7am today (Thursday), involved three vehicles. One man sadly died as a result of the collision and his next of kin have been informed.