Openreach confirmed changes to the following exchanges due to complex build issues.
| Exchange name | Exchange location | Exchange code | Original Tranche | Original date | Updated Tranche | Updated stop sell date |
| Woodgate | Birmingham | CMWDGT | Tranche 2 | 05-Oct-21 | Tranche 4 | 29-Apr-22 |
| Eastham | Wirral | LVEAS | Tranche 2 | 05-Oct-21 | Tranche 3 | 25-Jan-22 |
| Rickmansworth | Three Rivers | LWRIC | Tranche 2 | 05-Oct-21 | Tranche 3 | 25-Jan-22 |
| Cantley | Doncaster | SLCLY | Trance 1b | 05-Oct-21 | Tranche 4 | 29-Apr-22 |
| Dutton Diffeth | Wrexham | WNDD | Tranche 2 | 05-Oct-21 | Tranche 6 | TBA * |
| Bow | Mid Devon | WWBOW | Tranche 2 | 05-Oct-21 | Tranche 6 | TBA * |
| Penzance | Cornwall | WWPENZ | Tranche 2 | 05-Oct-21 | Tranche 6 | TBA * |
| Shirley | Solihull | CMSHI | Tranche 3 | 25-Jan-22 | Tranche 5 | 02-Aug-22 |
| Brock | Wyre | LCBRC | Tranche 3 | 25-Jan-22 | Tranche 4 | 29-Apr-22 |
