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The Maughan Library is the main university research library of King's College London, forming part of the Strand Campus. A 19th-century neo-Gothic building located on Chancery Lane, it was formerly the home to the headquarters of the Public Record Office, known as the "strong-box of the Empire", and was acquired by the university in 2001. Following a £35m renovation the Maughan is the largest new university library in the United Kingdom since World War II.
Designed by Sir James Pennethorne and constructed in 1851, with further extensions made between 1868 and 1900, it is a Grade II* listed building. Inside the library is a dodecagonal reading room, and a former medieval chapel, now an exhibition space showcasing the special collections of the library. The library was named in honour of Sir Deryck Maughan, an alumnus of the university.

Listed buildings and structures are officially designated as being of special architectural, historical or cultural significance. There are over half a million listed structures in the United Kingdom, covered by around 375,000 listings.
Listed status is more commonly associated with buildings or groups of buildings, however it can cover many other structures, including bridges, headstones, steps, ponds, monuments, walls, phone boxes, wrecks, parks, and heritage sites, and in more recent times a road crossing (Abbey Road) and graffiti art (Banksy 'Spy-booth') have been included.

In England and Wales there are three main listing designations;
Grade I (2.5%) - exceptional interest, sometimes considered to be internationally important.
Grade II* (5.5%) - particularly important buildings of more than special interest.
Grade II (92%) - nationally important and of special interest.

There are also locally listed structures (at the discretion of local authorities) using A, B and C designations.

In Scotland three classifications are also used but the criteria are different. There are around 47,500 Listed buildings.
Category A (8%)- generally equivalent to Grade I and II* in England and Wales
Category B (51%)- this appears generally to cover the ground of Grade II, recognising national importance.
Category C (41%)- buildings of local importance, probably with some overlap with English Grade II.

In Northern Ireland the criteria are similar to Scotland, but the classifications are:
Grade A (2.3%)
Grade B+ (4.7%)
Grade B (93%)

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King's College London is a university located in London, and a constituent college of the University of London. King's is arguably the third-oldest university in England, having been founded by King George IV and the Duke of Wellington in 1829. In 1836 King's became one of the two founding colleges of the University of London.
King's is organised into nine academic schools, spread across four Thames-side campuses in central London and another in Denmark Hill in south London.
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