Hi factor30
I think this link may be helpful.
http://www.land-registryuk.org/
It may be worth contacting the land registry before ordering any copy documents but it is shown we are Tennants in Common in equal shares on our land certificate.
You may have a copy of your land certificate in your bank.
Alternatively phone 0247 6860860 for advice.
This is the Coventry office for advice but they should be able to tell you where your local office is.
My fathers land certificate is in a different format to ours as his property is older.