Hi
Looking at the ESRO site, the only registers they hold for Haywards Heath which is in West Sussex are
Perrymount Road Wesleyan Methodist
Baptisms 1900-1957+; Marriages 1900-1968+
St Francis Hospital (Lunatic Asylum)
Deaths 1907-1951 (HC), Burials 1860-1953 (HC)
St Wilfrid Baptisms
Indexed 1865-1876, Marriages 1866-1876,
Sussex Road Primitive Methodist
Baptisms 1877-1957+, Marriages 1900-1953+, 1954-1986.
Chris in 1066