This certificate istheproperty ofNQA andmust bereturned onrequest. NQA isatrading divisionofAscertiva Group Ltd,Registration No. 02513162.Registered Office:Warwick House, Houghton Hall Park, Houghton Regis, Dunstable, Bedfordshire, LU5 5ZX. The useoftheUKAS Accreditation Mark indicatesaccreditation inrespect ofthoseactivitiescovered bytheaccreditation certificate number 015heldbyNQA. Certificate of Registration Certification Director F to theabovestandard, which will bemonitored byNQA. This registration issubjecttothecompanymaintainingaqualitymanagementsystem, BS EN ISO 9001: 2008 has beenassessedandregistered byNQA againsttheprovisions of CCTV systems, civilengineering, building fabric maintenance and vegetation control The provision of pipe and sewer maintenance, sewer renovations, high pressure jetting, sewer applicable to 12-16 David Road, Colnbrook, Slough, SL3 0DG UKDN Waterflow This istocertify thattheQualityManagementSystem of A EAC Code: Valid Until: Reissued: Date: Certificate No: 28/35 25 October 2015 2 May2014 30 August 1995 6978

This certificate istheproperty ofNQA andmust bereturned onrequest. NQA isatrading divisionofAscertiva Group Ltd,Registration No. 02513162.Registered Office:Warwick House, Houghton Hall Park, Houghton Regis, Dunstable, Bedfordshire, LU5 5ZX. The useoftheUKAS Accreditation Mark indicatesaccreditation inrespect ofthoseactivitiescovered bytheaccreditation certificate number 015heldbyNQA. Certificate of Registration Certification Director F A The following sites are included within the scope of this certificate... CF3 2ES South Glamorgan Rumney Springmeadow Business Park Unit 10Springmeadow Road Cardiff UKDN Waterflow Limited - NG2 3GW Brand Street Meadow Court Unit 8 Nottingham UKDN Waterflow Limited - SL3 0DG Berkshire Colnbrook Poyle Trading Estate 12-16 David Road Services Limited UKDN Waterflow Technical PA3 4EA Paisley 123 Renfrew Road Mirren Court Three Paisley UKDN Waterflow Limited - BH23 6NW Dorset Christchurch Bournemouth International Airport Aviation Park West Building 110 Bournemouth UKDN Waterflow Limited - B37 7HG Coleshill Road Pinewood Court Chapel UKDN Waterflow Limited - The EAC Code: Valid Until: Reissued: Date: Certificate No: PL7 4TA Devon Plymouth Newham Industrial Estate Bell Close Unit 5Bell Park Plymouth UKDN Waterflow Limited - SK6 1QN Bredbury Lingard Lane Bridgeside Business Centre Unit 4 Stockport UKDN Waterflow Limited - B37 6RF Chelmsley Wood Waterloo Industrial Estate Unit 10 Midlands UKDN Waterflow Limited - 28/35 25 October 2015 2 May2014 30 August 1995 6978

This certificate istheproperty ofNQA andmust bereturned onrequest. NQA isatrading divisionofAscertiva Group Ltd,Registration No. 02513162.Registered Office:Warwick House, Houghton Hall Park, Houghton Regis, Dunstable, Bedfordshire, LU5 5ZX. The useoftheUKAS Accreditation Mark indicatesaccreditation inrespect ofthoseactivitiescovered bytheaccreditation certificate number 015heldbyNQA. Certificate of Registration Certification Director F A The following sites are included within the scope of this certificate... LS23 7FB West Yorkshire Wetherby Thorp Arch Estate Unit 14MoatHouse Square Wetherby UKDN Waterflow Limited - RH1 2LW Surrey Redhill 36 Ormside Way Redhill UKDN Waterflow Limited - DA6 8DS Kent Bexley Heath Devonshire Road Bexley Heath UKDN Waterflow Limited - HA4 7SQ Middlesex Ruislip Breakspear Road Kern House Ruislip UKDN Waterflow Limited - EAC Code: Valid Until: Reissued: Date: Certificate No: PE37 7XD Norfolk Swaffham 57 Turbine Way Swaffham UKDN Waterflow Limited - 28/35 25 October 2015 2 May2014 30 August 1995 6978