Using data on UK manufacturing firms, we examine the effects of exchange rate uncertainty on firm decisions on export market entry and export intensity. The use of micro data and new measures of exchange rate uncertainty enable us to test for hysteresis effects in a new way and to test the sensitivity of results to a range of different measures. The results show that exchange rate uncertainty has little effect on firms' export participation but a significant impact on export intensity. We find that industry heterogeneity is important and there would be serious problems of aggregation using pooling and aggregate data.

JEL Classification: D81, F23, F31, F36