On the beach, possibly Bispham, Blackpool, 1930s

My mother (born 1919) sitting on the sand; probably her mother behind her. I cannot confidently identify the others but the couple in the deckchairs to the left might be my mother's Aunt Ethel and her husband, who farmed at Orby in Lincolnshire. From an album in which, sadly, only two pages have been filled; they both include photographs of Bispham so I presume that this was taken on the same holiday.