Unit £: The effect of an appreciating Euro on the UK economy

This BBC clip explains that the rising euro is good news for British exporters but is squeezing those who import European goods.

< http://www.bbc.co.uk/mediaselector/check/player/nol/newsid_7310000/newsid_7315900?redirect=7315980.stm&news=1&nbram=1&nbwm=1&bbwm=1&bbram=1&asb=1 >

a) Explain why UK business who export to the EU win and UK businesses who import from the EU lose when the Euro appreciates
b) Would might some businesses be effected more than others by this appreciation?