Hi @Marnie Holborow
downloaded the other styles on to my c drive
Could you please tell us which version of Office are you using now?
Please ensure that you have put the .xsl files into C:\Users<user account>\AppData\Roaming\Microsoft\Bibliography\Style and C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style.
Please note, if you have 32-bit version, the second path should be: C:\Program Files (x86)\Microsoft Office\root\Office16\Bibliography\Style.
Besides, please make sure these .xsl files are not blocked via the anti-virus software on your machine.
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