If scores were level after 90 minutes had been played, a replay would take place at the stadium of the second-named team later the same week.
Of those, Walker Celtic, Bromley and Westbury United were the only clubs appearing in the competition proper for the first time, although King's Lynn had not featured at this stage since 1905–06.
Additionally, after more than a decade of receiving direct byes to various stages of the main draw, Corinthian had successfully navigated the qualifying rounds for the first time.
Bromley was the most successful club from this season's extra preliminary round, defeating Beckenham, Darenth Park, Aylesford Paper Mills, London Paper Mills, Sittingbourne, Wimbledon and King's Lynn before going out to Scarborough in the second round proper.
The 44 First and Second Division clubs entered the competition at this stage along with Chester, Millwall and Notts County.
After 29 minutes of extra time it was still 0–0 and BBC commentator Thomas Woodrooffe said "if there's a goal scored now, I'll eat my hat".
Seconds later, Preston were awarded a penalty, from which George Mutch scored the winning goal; Woodrooffe kept his promise.