The move towards the 1969 Constitution was sparked off after the outcome of the 1967 sovereignty referendum, where 99.19% of Gibraltarians voted against passing under Spanish sovereignty and in favour of retaining their link with Britain, with democratic local institutions and with Britain retaining its present responsibilities.
Gerakan mendukung Konstitusi 1969 muncul setelah hasil referendum kedaulatan 1967, ketika 99,19% penduduk Gibraltar memilih untuk tidak berada di bawah kedaulatan Spanyol dan mempertahankan hubungan dengan Britania Raya, dengan institusi lokal demokratis dan Britania mempertahankan tanggung jawabnya saat ini.