We are in the same position, but we had all of our deeds, and land sales paperwork etc, and our neighbours are registered, so we thought it would be a very simple thing. A friend recommended a solicitor and we handed everything over. She told us it can take up to a year for simple cases and more for those without provenance. Two years and NOTHING.
My DH contacted them directly and they could not be more helpful. A form to fill in.
If you have copy of deeds, sales paperwork these are essential. Especially if it contains a plan. Your local planning dept may have a street plan.
If your developer or your solicitor are still around, they may be able to help with previous sales info.
Your land may also be registered as a whole site if you are on an estate.
If your neighbours are helpful they may be able to let you have a copy of their registry.
A new definition of what constitutes British


