It was reported that the victim was walking on a footpath near Beaconsfield Road at around 11pm on Sunday 27 February 2022 when she was approached by a man who assaulted her.
A member of the public intervened and the man left the area in the direction of the railway underpass. The woman was not injured.
A 47-year-old man of no fixed address was arrested during the morning of Tuesday 1 March in connection with the assault. He remains in custody while enquiries are ongoing.
Anyone with information regarding the incident should call Kent Police on 01843 222289 quoting 46/38326/22.
You can also contact Crimestoppers anonymously on 0800 555111 or by using the online form on their website http:///crimestoppers-uk.org.