How best to optimise my site

[Usk_Digital]

Hello Brickcraft
Here, you've already received some helpful advice. Along with the on-page adjustments you've made, I would strongly advise focussing more on local SEO because you're targeting "timber windows Nottingham." For example:

ensuring that your Google Business Profile is completely optimised, including the right categories, reviews, and images.
Listing in local directories, such as ThomsonLocal, FreeIndex, and Yell, provides powerful local signals.
You can naturally target long-tail keywords by including a projects/blog section to highlight your work, such as "Timber windows installed in Nottingham townhouse."
Wix SEO can be restrictive, but you should see more traction for those keywords if you have some regular local signals and content.