yes, however your figures are slightly off. Last year, exports to the EU were 44%, to the Republic of Ireland was 7.5%.
Your export figure by the way also include shipments to countries outside the EU which transit through Holland's shipping network.
“The official ONS [Office of National Statistics] data significantly overstates the real level of UK exports to the rest of the EU, because of… the Rotterdam-Antwerp Effect… The Rotterdam-Antwerp Effect arises because the ONS and its fellow-bodies, in compiling their geographical registers of exports, record as the destination of the export the country of the first port of discharge of a consignment, even when the consignment is only in transit on its way to a different end-destination country… Even when recorded as exports to the Netherlands and Belgium, British goods may not even touch Dutch or Belgian soil, simply being transhipped in the ports of Rotterdam and Antwerp to container vessels bound for – say – Singapore.”
It's like anything the government tells you, there a lies, damned lies and statistics........