A 33-year-old man will appear in court today accused of trying to assist terrorism.
Scotland Yard said Asim Ali, of west London, would appear in custody at Westminster Magistrates Court.
It is claimed he had been linked to Imran Khawaja, 26, and others to commit acts of terrorism.
Khawaja has been charged with terrorism offences including allegedly attending a terror training camp in Syria.
According to the charges, Ali gave Khawaja £300 cash from his bank account before his departure from the UK and provided advice on establishing communications using apps.
It is also alleged that he co-ordinated the collection of funds along with co-ordinating the collection of property and also sold clothing and encouraged others to do so to raise funds.
Ali is also said to have acted as a conduit for messages and news between Khawaja and family members, to have provided funding knowing that the money was required for the purchase of weapons and also given advice on the use of covert communications to others to facilitate their interaction with Khawaja.
He is further accused of providing advice how to transmit money from the UK to avoid detection.