To have his PPL reissued for a further 5 years it will cost £70 + medical. To have a NPPL Issued it will cost £49 and probably last till 2012 when it may have to align with EASA and become a LAPL at extra cost!
http://www.caa.co.uk/docs/33/241PLS.pdf Acording to
ORS 756 he may exercise NPPL privileges on the basis of a SEP Class rating so there is no justification for charging anything other than a licence issue fee.