Probably:
Civil Registration Indexes (Births)

Sylvia Ashbridge Haigh, reg. 4th quarter of 1898, Rotherham, Yorkshire West Riding, England.
Sylvia Doris Haigh, reg. 3rd quarter of 1902, Hemsworth, Yorkshire West Riding, England.
Sylvia M. Haigh, reg. 2nd quarter of 1911, Birmingham, Warwickshire, England.
Sylvia M. Haigh, reg. 4th quarter of 1913, Bradford, Yorkshire West Riding, England.
Sylvia B. Haigh, reg. 4th quarter of 1914, Penistone, Yorkshire West Riding, England.