Information relating to the amount of land that is either registered or unregistered in Great Britain is not collected centrally. In England and Wales, land registration is compulsory on sale and on most other transactions affecting unregistered land. Over 18 million titles are already registered out of an estimated 23 million. The Land Registration Bill currently before Parliament is expected to lead to a substantial increase in voluntary applications for first registration and in registration of leasehold interests. The Law Commission and HM Land Registry have recommended that ways in which all remaining land with unregistered title in England and Wales might be brought on to the register should be re-examined five years after the Bill is implemented. The Government are currently considering that recommendation.