Currently, the application deadline for the Supplementary Information Form (SIF) is not specified in the available Bromley information. However, it's important to note that SIFs must be returned to the relevant school by the closing date for applications, which is detailed in the primary and secondary school application booklets. You'll want to check those specific booklets for exact dates.
For more information or to download the application booklets, please visit the primary school admission page or the secondary school admission page.