John Pollard Seddon was an English architect.
He was a pupil of Thomas Leverton Donaldson

Thomas Leverton Donaldson

Thomas Leverton Donaldson was an English architect.He was born in Bloomsbury Square, London, the eldest son of architect, James Donaldson...

 and C.F.A. Voysey trained under him.

Between 1852 and 1863 he formed a partnership with John Prichard

John Prichard

John Prichard was a Welsh architect of the neo-Gothic style. John Prichard was the son of Richard Prichard a rector from Llangan, Glamorgan and was born on 6 May 1817. He established a practice in Llandaff, Cardiff where he became the diocesan architect. Between 1852 and 1863 he set up a...

. Many of their major commissions were church restoration works, most famously for Llandaff Cathedral

Llandaff Cathedral

Llandaff Cathedral is the seat of the Bishop of Llandaff, head of the Church in Wales Diocese of Llandaff. It is situated in the district of Llandaff in the city of Cardiff, the capital of Wales. The current building was constructed in the 12th century over the site of an earlier church...

. From 1884 to 1904 he was in partnership with John Coates Carter.

His works include the University College of Wales building in Aberystwyth

Aberystwyth

Aberystwyth is a historic market town, administrative centre and holiday resort within Ceredigion, Wales. Often colloquially known as Aber, it is located at the confluence of the rivers Ystwyth and Rheidol....

, St Peter's Church, Ayot St Peter

Ayot St Peter

Ayot St Peter is a village and civil parish in the Welwyn Hatfield district of Hertfordshire, England, about two miles north-west of Welwyn Garden City. According to the 2001 census it had a population of 166. The village is near Ayot St Lawrence....

, Hertfordshire and St Catherine's, Hoarwithy, Herefordshire. He was also a prolific designer of furniture, metalwork, stained glass, tiles and ceramics.