Although she was not injured, police say she was left extremely shaken as a result of the incident, which took place at around 7.45am this morning (Monday, June 21)
The woman managed to take a photograph of the man from behind as he ran off.
Police have released this image in the hope that someone might recognise the clothing and help detectives identify who he is.
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The man is described as in his late 30s/early 40s, 5ft 8 tall, of a lean build, tanned and with dark hair.
Anyone who saw anyone matching the description, or anyone acting suspiciously in the area is urged to get in touch.
Information can be passed to police, quoting reference number PR/P21132177 via
• The webchat atwww.surrey.police.uk
• Calling 101
If you do not wish to leave your name, call the independent charity Crimestoppers on 0800 555 111.