In addition to the major resources listed on this page, the Albert Sloman Library has fairly extensive historical holdings of UK statistical series.
For a list, with links to online where available, please see Word document below:
See also the Library subject guide to Finance for details of further resources
The Bank of England is a very useful source of publications and data on monetary policy, inflation, and financial stability.
The ONS offers a range of other publications & series, notably:
A good starting point for guidance is:
A short guide to the UK national accounts 2015 P. Lee et al Online
Or, for historical data:
National accounts statistics: sources and methods 1968, R. Maurice HJ 9925.G7
At a local level, the main publication is the Local Government Financial Statistics (England), online from 2000- with some earlier years held in print form by the Library.