Certification Bodies - Contact details Red Tractor Assurance licences commercial Certification Bodies to assess and certify the Red Tractor Standards. Their contact details can be found below: Lloyds Register Tel: 0131 335 6643 email: [email protected] NSF Membership Queries, Renewals and Applications Tel: 01993 885739 email: [email protected] NSF General Enquiries and Non-Conformance Closures Tel: 01993 885610 email: [email protected] NSF Crop Stickers Tel: 01993 885610 email: [email protected] SAI Global Tel: 01908 249973 email: [email protected] NIFCC Tel: 028 9263 3017 email: [email protected] QWFC (RTA Dairy only) Tel: 01970 636688 email: [email protected]