The King's Fund house style: T

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not targetted



Although these two words are commonly used interchangeably, they serve different functions.

'That' is used for defining or restrictive clauses (a clause that is specific to a particular person or thing):

  • 'The patient made a list of the symptoms that were most troublesome.' In this example, the symptoms listed were restricted to those that were the most troublesome

Which is used in non-defining or non-restrictive clauses:

  • 'The patient made a list of the symptoms, which were most troublesome.' In this example the phrase ‘which were most troublesome’ provides additional informal about the symptoms


Write times as follows: 8.00am, 9.15pm (note: no space between number and am/pm). Where it’s necessary to say o’clock (for example, in an extract), put in a space after the number (8 o’clock).



trade unions
not trades union

try to
not try and

type 1 / type 2 diabetes
lower case and Arabic numeral