The Financial Services Compensation Scheme is the compensation fund of last resort for customers of authorised financial services firms. If a firm becomes insolvent or ceases trading, the FSCS may be able to pay compensation to its customers. Limits apply to how much compensation the FSCS is able to pay, and those limits vary between different types of financial products. However, to qualify for compensation, the firm you were dealing with must be authorised by the Financial Services Authority (FSA).
The Financial Services Authority is an independent non-governmental body, given a wide range of rule-making, investigatory and enforcement powers in order to meet its four statutory objectives: market confidence (maintaining confidence in the UK financial system), financial stability, consumer protection and the reduction of financial crime. The FSA receives no government funding and is funded entirely by the firms it regulates, but is accountable to the Treasury and, ultimately, parliament.