Lots of valuable comments on Property Deeds. Thank You All.
From my own records I have found some information that may help others.
BACKGROUND: To enable us to purchase the house I obtained a mortgage from Abbey National. Every year after the purchase Abbey wrote to me saying they had the deeds in their safe keeping and for which there was no charge. In the ensuing years, it had escaped my notice that the "yearly" letters from Abbey had ceased and that Abbey had been taken over by Santander UK Plc. At that time (2017) Santander appeared to be getting a lot of "bad press" and I decide to find out the location of our deeds. After some initial problems the deeds where found and returned to myself. Since starting this thread, I discovered two letters one to my wife and to myself from the Land Registry (our property is in joint names hence the two letters). The letter states a number of interesting things (i) The Land Registry confirms that the property is no longer subject to mortgage. (ii) They can supply a copy of the registered title on line or post for a small fee. (iii) They do not hold paper deeds. The register is electronic. They add a note: " the paper deeds are normally returned to whoever sent them to them when the property was first registered. They also provided a free property monitoring service called Property Alert. See
http://www.gov.uk/guidance/property-alert.
However I am still confused on the part the Land Registry plays in this for example: What is the situation where the property is leasehold? In my deed pack there are all sorts of documents including a copy of the lease, which I had never seen before the deeds arrived. So although I have the Deeds sort of making me a "free man" I am still legally bound by the lease.