It takes a good while until the website start showing in search results. What keywords are you targeting?
If budget allows, I'd look into being listed on these websites:
https://www.ratedpeople.com
http://trustedtraders.which.co.uk
http://www.checkatrade.com
https://www.mybuilder.com
On your website you need a lot more text and details, try including keywords that your potential customers might use to search for somebody with your trade, more image, more areas where you provide your services, testimonials and case studies.