Hello, my name is ***** ***** it is my pleasure to assist you with your question today. I presume you were an employee and not working as self employed or a contractor?
Yes I was an employee.
As an employee you will not have rights to the copyright in question even if you were the one who created it. The law states that employees who create work in the course of their employment automatically assigns the copyrights to the employer. This is under section 11(2) of the Copyright, Designs and Patents Act 1988. Had you not been employed to do the work in question it may be different but in this case it is clear that part of your duties were to do this work so the copyright will vest with the employer.
As the company is now dissolved and no longer in existence it does not mean that the copyright has gone to you, just because you created the work in question. You never had the copyright in the first place so you cannot claim that it has passed on to you. It would generally became something known as ‘bona vacantia’ and can potentially be purchased and for more details on that you can see here:
Thank you Ben. That's answered my question.