The Weaste and Seedley ward by-election was held on Thursday 20 June 2013.
| Candidate | Party | Votes cast |
|---|---|---|
| Ferrer, Mary | Green Party | 80 |
| Kelly, Valerie | Liberal Democrats Party | 58 |
| Kennaugh, Adam | Conservative Party | 260 |
| Pollitt, Kay | British National Party | 74 |
| Simmons, Terry | Trade Unionist and Social Coalition | 30 |
| Simpson, Matt | Independent | 64 |
| Valentine, Alan | Independent | 15 |
| Wilson, Paul | Labour Party | 785 |
| Wright, Glyn | UK Independence Party | 401 |