Security & Collateral · glossary
An OS1 is an official search with priority of a whole registered title at HM Land Registry. It shows any change to the register since a date you choose. It also starts a priority period of 30 working days. A purchase, lease or mortgage lodged for registration in that time ranks ahead of anything lodged after the search.
A search of a title at HM Land Registry that opens a priority period of 30 working days. An application the searcher lodges inside that period ranks ahead of anything lodged in between. The Bank's search was made on 20 April 2026, and its application went in on day 25. Debenture §5.1 · Chapter 4
Explained in Chapter 4, The Land: A Legal Mortgage, of Security & Collateral.
Also explained in Buying Commercial Property.
Registration came five weeks after signing, and a search covered that gap. Four days before signing, your firm made an official search with priority (form OS1) in the Bank's favour. The result showed that nothing had changed on the title and that no other charge was registered.Read Chapter 4, The Land: A Legal Mortgage →
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It starts when HM Land Registry enters the search on its day list. It ends at midnight at the end of the 30th working day after that. An application for the protected purchase, lease or mortgage lodged in that time comes first.
To search the whole of a registered title, or a title waiting for first registration, before a purchase, lease or mortgage for value. A search of part of a title uses form OS2. A search without priority uses form OS3.
At midnight at the end of the 30th working day. It cannot be extended. A second search starts a new period, but it gives no protection against anything lodged before that new period began.
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