St Swithin’s church, Lincoln.
1802-3.
Rebuilt, but demolished 1869, before being re-built by James Fowler of Louth on an adjacent site.

Lincoln Cathedral 1804.
Rebuilt gable on south side of west transept.

Kirton in Holland Church, Lincolnshire.(1804-5) Demolished central tower and transepts, shortened chancel and built new west tower incorporating features of the central tower.

St Martin's Church, Lincoln.
1809.
Rebuilt north aisle.
The church was demolished about 1875.

St Mary and St Nicholas Church, Wrangle, Lincolnshire.
In 1820 Hayward advertised for MASONS.
PERSONS wishing to Contract for the TAKING DOWN and RE-BUILDING the TOWER of WRANGLE CHURCH, in the Archdeaconry of Lincoln, may see the Specifications for the same work  on application to Mr. John Slater, Churchwarden; or at the office of Mr. Hayward, architect, Lincoln.
The rebuilding appears to be very similar to the work at Kirton in Holland church and includes alterations and battlements on the gables of the aisles.
This work is not noted in Pevsner's description of the church.

Torksey church, alterations 1821-22.
St Swithin’s church, Lincoln. 1802-3. Rebuilt, but demolished 1869, before being re-built by James Fowler of Louth on an adjacent site.
Lincoln Cathedral 1804. Rebuilt gable on south side of west transept.
Kirton in Holland Church, Lincolnshire.(1804-5) Demolished central tower and transepts, shortened chancel and built new west tower incorporating features of the central tower.
St Martin's Church, Lincoln. 1809. Rebuilt north aisle. The church was demolished about 1875.
St Mary and St Nicholas Church, Wrangle, Lincolnshire. In 1820 Hayward advertised for MASONS. PERSONS wishing to Contract for the TAKING DOWN and RE-BUILDING the TOWER of WRANGLE CHURCH, in the Archdeaconry of Lincoln, may see the Specifications for the same work  on application to Mr. John Slater, Churchwarden; or at the office of Mr. Hayward, architect, Lincoln. The rebuilding appears to be very similar to the work at Kirton in Holland church and includes alterations and battlements on the gables of the aisles. This work is not noted in Pevsner's description of the church. 
Torksey church, alterations 1821-22.
William Hayward (architect)