GroupCompany
2017
£000
2016
£000
2017
£000
2016
£000
Trade receivables47,49741,931
Non trade receivables and prepayments1,8631,45518341
Amounts owed by subsidiary undertakings31,19933,572
49,36043,38631,38233,613

An explanation of credit risk and details of the security held over receivables is provided in note 26.