Think I might have been lucky, they didn't respond in the 14 days so I requested a default judgement against them which was awarded 2 days later. In the end I didn't have to use any of the TOS stuff, missed deadlines etc.

As for residential addresses, with this being a Limited Company you cant send bailiffs there as my CCJ is against the company not the directors and they won't be able to do anything. What would be great to find is if they have a warehouse / alternative address where they hold any PC equipment /  stock etc as that is part of the company and would be liable for seizure.