The artist, Joanna Dewfall, does a lot of participatory projects, and this mural comes out of workshops at Tudor House (see this article on the Tudor House website). From the plaque:
This mural was designed and produced by artist Joanna Dewfall, inspired by ideas from local people. The design celebrates the city's iconic buildings, maritime industry and cultural diversity.I'm enjoying picking out details and references. It's a great addition to any walk around the town.
The central panel made by Joanna (dewfallmosaic.co.uk) is a snapshot of Southampton in the 21st century. The border symbolises key features from the city's past and present, and was produced by local people.