household consumption 49 1 npish 2 0 gov t 16 3 gfcf 12 7 inventories exports 19 8 figure composition of total final expenditure current prices 2003 early estimates consumer spending margaret dolling rhys herbert and hugh skipper office for national statistics introduction is the largest single component measure gdp accounting about 50 per cent accurate measurement its growth over time therefore vital to an understanding uk economy monthly estimate retail sales seen as indicator although this article will explain it should only be used in way with caution describes how ons goes task measuring focusing particular on which inevitably have based limited data sources first section examines breakdown presented accounts two initial each categories are calculated three looks at issue much actual