http://www.legislation.gov.uk/uksi/1988/1197/contents/made
The Building Societies (Limits on Lending) Order 1988
Building societies
King's Printer of Acts of Parliament
2011-07-04
BUILDING SOCIETIES
This Order increases from £10,000 to £15,000 the limit on loans which a building society may make to an individual under section 15 of the Building Societies Act 1986 for the purchase of a mobile home, and increases from £5,000 to £10,000 the limit on loans (other than mobile home loans and loans fully secured on land) which a building society may make to an individual under section 16 of the 1986 Act.
The Building Societies (Limits on Lending) Order 1988
The Building Societies (Limits on Lending) Order 1992