Further to redgrant's post, it depends on the context of the deeds referred to.
Deeds is used as reference to the title to the property generally by some people, even though, with many properties being registered at the Land Registry and there being a title register, meaning that "deeds" are not as crucial as they were for unregistered property, when they were vital to prove ownership etc...
Not all properties are registered though, for unregistered properties deed are still vital.
Deeds can also be used to refer to certain documents which make up or relate to the title to the property as well - not all information is listed on the title register at Land Registry so the actual documents themselves are often still required to see what is contained. For example, on a leasehold title the title register will not hold all details of the lease verbatim, it will have brief main details but the actual document is still needed to see what is contained.