www.eca.europa.eu/Lists/ECADocuments/auditinbrief-2014/auditinbrief-2014-EN.pdf
"For the expenditure budget as awhole, our estimated level of error of 4.4% leads us to provide an adverse opinion on the regularity of expenditure (for an explanation of ‘regularity’ please refer to page 46)."
4.4% of 144.5 Billion Euros is 6.35 Billion Euros ==
£5 Billion!