You don't seem to need the title for anything at present which is good. But from May to now is quite a while to be waiting.
When you say your solicitor went 'bust', what do you mean? Was their practice taken over by the law society? If so, they often appoint a firm to go through the files and put them in order and then you are supposed to appoint a new solicitor who then takes up the file from the law society. The new solicitor assesses whether any work is needed, a claim needs to be made on the compensation fund and so on.
As Sue Ellen pointed out, mainly title deeds are a thing of the past. Now you may be one of the few remaining Registry of Deeds properties, and if so its a different procedure. But if you are land registry, then a copy of your title can be obtained at any time from the Property Registration Authority. You would need to reconstitute certain things, like certs of compliance with planning, BER certs etc. Any solicitor would be able to discern what type of title you have and what you need.