Officers have received reports of at least five incidents involving a male approaching females in the areas surrounding Aldborough Road North, Ilford.
The incidents, which were reported to have happened between December 2021 and February this year, were highly traumatic for the victims and they continue to be supported by specialist officers.
A male was arrested on Sunday, 13 March and charged the following day with three counts of sexual assault.
DI Sion Hughes, from East Area BCU said: “While we have charged someone with three offences, my primary concern is that there may be other victims, and those victims may need support.
“We know that women are disproportionately affected by crime of this nature and are absolutely committed to doing everything we can to make women feel safe and be safe.
“If you believe that you have been a victim of sexual assault, please come forward. We will support you and take action to place the person responsible before the courts.”
Any witnesses or anyone with any information is asked to call 101 or Tweet @MetCC quoting 4404426/22.
If you are in immediate danger always dial 999.
You can also speak 100% anonymously to the charity Crimestoppers on 0800 555111 or online at crimestoppers-uk.org. Calls are never traced and IP addresses are never tracked.