Details of UK bilateral Official Development Assistance (ODA) to China between 2009 to 2019 can be found in table A4b of the Statistics on International Development (SID), published on the gov.uk website at https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/920048/Table-A4b.ods. Please note in line with SID revision policy there has been a minor revision to the 2019 SID dataset. A data processing error in reporting meant that the published 2019 figure of UK ODA spend in China was £500,000 lower than the actual spend [as the Grant in Aid ODA for the Great Britain-China Centre (GBCC) was mistakenly attributed to 'developing countries unspecified']. This revision does not affect the headline ODA figure which was £68 million UK bilateral ODA to China in 2019.
Further details on the programmes that underpin the figures in table A4b, including project titles and descriptions, can be found in the ODA activity level datasets published on gov.uk:
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/921034/Data_Underlying_SID_2019.ods (for 2017-2019) and https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/695435/data-underlying-the-sid2017-revision-March.ods (for 2009 - 2016).
UK historical ODA spending is collected and published by the OECD. Information on UK ODA spend from 2005 to 2008 can be found online at https://stats.oecd.org/qwids/#?x=2&y=6&f=3:51,4:1,1:23,5:3,7:1&q=3:51+4:1+1:23+5:3+7:1+2:36+6:2005,2006,2007,2008.