Hi Fluffy,
I'm afraid I don't have the 1851 for Horsham but here are the details I do have for 1841. All the records are from the 1841 census HO107/1097 for Horsham. I made notes as I went through the census so they are sorted into enumeration districts. I hope these help with your research, everyone is born in Sussex unless otherwise stated.
Chris

.................
Enum District 5
schedule 28, page 1
Carfax
John Burstow, 60, wheelwright
Mary, 54
John, 30, wheelwright
Elizabeth, 21
Frederick, 12
schedule 29, page 4
Lloyds yard
James Burstow, 36, ag lab
Mary, 36, (not born Sussex)
Jane, 12 (not born Sussex)
Clara, 10, (not born Sussex)
schedule 33, page 11
Carfax
at the home of James Weller, miller & baker
Thomas Burstow, 19, baker
...........
Enum District 2
schedule 30, page 12
Shaws - home of James Wills, Wheelwright
Thomas Burstow, 37, male servant
.............
Enum District 3
schedule 49, page 14
Upper East Street
Thomas Burstow, 45, wheelwright
Sarah, 40
George, 15, wheelwright
James, 13
William, 11
Stephen, 8
Frederic, 6
Sydney, 4
Sarah, 6 months
Harriet, 14
David, 40, wheelwright
................
Enum District 4
schedule 8, page 7
Bishoprick
Ellen Burstow, 55, pipe maker
George, 20
Jane, 15
Charles, 15, male servant
James 15, (looks like Apr Shoe m)
Henry 14, "
Ellen, 12
schedule 15, page 22
Carfax
Charles Burstow, 30, architect & surveyor
Ann, 35 (not born in Sussex)
Charles, 6
Ann, 4
Eleanor, 2
schedule 16, page 23
Carfax,
Charles Burstow, 50, builder
Sarah, 50
Sarah, 25
Henry, 20, cooper
Edward, 20, carpenter
Walter, 15
Mary, 14
Jane, 14
Ellen, 12
schedule 18, page 28
Chapel Lane
at the home of John Heath, 50, coachbuilder and his wife Ann, 50
Ellen Burstow, 1
schedule 19, page 28
Chapel Lane
George Burstow, 25, carpenter
Elizabeth, 20 (not born Sussex)
schedule 20, page 31
Chapel Lane
Jasmes Burstow, 25, carpenter
Ann, 25
Thomas, 4
James, 1
....................