Advice needed - Fencing job not completed as expected

[Bad Ash]

Not sure if you actually paid him for the materials or bought them yourself. If the former I would, in the first instance, ask for the receipt for the materials for your records prior to the (any) labour payment. There is a fair chance this may not be forthcoming & if so then you have a further issue & handily further grounds for withholding the labour payment with no argument from him as it is now his 'move '
If he can produce at least you know this was the correct cost & not a concern

I paid him, so I might do this, thanks. I hadn't realized that he was expecting payment up front for the materials and he only sent me his bank details the day before he was due to start work (in the afternoon). This led to the work being delayed by 2 days.

One positive is that he got into contact with me after I posted the job on RatedPeople.com. In the job requirements I clearly state that I want a fence to match my other fence, so I will be quoting this when I make a list of the issues I have with his work.