They say they want to ensure she's safe and well after serious concerns for her.
Police are appealing for information regarding the lady in the photograph:
Yesterday at approximately 19:00 police officers from Blackpool police station attended McDonalds on Bank Hey Street following serious concerns for the female in yellow shown in the photograph.
"It is very important that we find out who this lady is so we can make contact with her and ensure she is safe and well."
It is believed she's on holiday with her three children and that she is due to go home on the train tomorrow.
If anyone has any information on either the identify of this female or where she is staying it would be highly appreciated.
Officers are particularly keen to hear from hotels in the Blackpool area who may be accommodating her.
Please contact police on 101 and quote log 1165 of the 22nd August 2019 if you have any information you can offer.