It is understood that police activity in the Gellatly Street area was linked to the investigation into their disappearance.
Girls being supported by specialist officers
A Metropolitan Police statement said: “The girls, aged 15 and 16, who were from Kent and Harrow, were located at an address in Dundee, Scotland on the afternoon of Thursday.
“They are safe and well and are being supported by specialist officers.
“A 20-year-old male was arrested at a separate address in Scotland on Thursday. He remains in custody at Police Scotland facility.
“A 54-year-old man arrested on Tuesday was charged on Thursday with child abduction and modern slavery.
“He appears in custody at Willesden Magistrates court later today.
“Detectives from the Met’s North West Command Unit investigate. Inquiries continue.”
Girls reported missing from England found in Dundee as man, 20, arrested