Filming for the Harry Potter and the Half-Blood Prince movie is scheduled to take place at the Surbiton (a suburban area of London) train station this weekend with Daniel Radcliffe in attendance.
Filming will take place overnight from Friday to Sunday.
According to Seargeant Christopher MacKellaich, of the British Transport Police:
We will have officers down at the station on Friday, Saturday and Sunday night to assist with any public order issues associated with the filming.
They are going to be filming overnight from ate evening to the early morning and we will have six or seven officers down there each night.