Land Registry Internet register access
The location for online pre-completion registered land searches.
Landmark Information Group, property and environmental risk information
Environmental searches can be obtained from the Landmark Information Group. These might shed light on former uses of the land perhaps revealed by covenants in the deeds.
Full information concerning NHBC structural defects insurance.
It might be useful to consult a detailed Ordnance Survey map when considering boundary problems and to compare with title deed plans.