This information and photo was kindly sent in by Jade Parker.
I managed to find a photo from July 1977 of the Silver Jubilee Street Party. The photo attached is on my nanny's road. Bettescombe Road, where my nanny, grandad, mum, aunt and uncle lived since '72.
My mum remembers there was a fancy dress competition where my aunt and uncle participated, they dressed up as a pearly king and queen and their outfits were made my great grandmother that was from east London. The time of the jubilee competition was changed and sadly they missed the start and they had already chosen the winner. It was disappointing since my great grandmother spent many weeks sewing their outfits.