進入歐盟市場的國外產品需具備CE 證書，可辦理CE的認證機構是歐盟指定的認證機構。
而這些機構都是屬於歐盟成員國，代辦公司的也是這些機構的辦事處或分公司。
英國脫歐之前，認證機構是英國註冊在歐盟的，可是脫歐之後，英國認證機構所出具的CE 證書不會被歐盟認可。
歐盟官網已經通告（是通告，不是正式法規）：所有英國公告機構授權將在2019年3月全部失效。
受影響的機構有以下公告機構：
NB 0038 Lloyd's Register Verification LimitedNB 0040 BRITISH ENGINEERING SERVICES LT
NB 0041 BUREAU VERITAS UK LIMITED
NB 0086 BSI
NB 0087 GL Industrial Services UK Ltd
NB 0088 LLOYD'S REGISTER QUALITY ASSURANCE LTD (0088)
NB 0097 DNV GL UK LIMITED
NB 0120 SGS United Kingdom Limited
NB 0126 NMO (a part of Regulatory Delivery)
NB 0135 OXFORDSHIRE COUNTY COUNCIL
NB 0138 CHESHIRE WEST AND CHESTER COUNTY COUNCIL
NB 0144 KENT COUNTY COUNCIL
NB 0145 WARWICKSHIRE COUNTY COUNCIL
NB 0168 TUV SUD BABT
NB 0173 LANCASHIRE COUNTY COUNCIL
NB 0175 LEICESTERSHIRE COUNTY COUNCIL
NB 0178 SOUTH WEST OF ENGLAND TRADING STANDARDS AUTHORITIES
NB 0183 LONDON BOROUGH OF HAVERING:NORTH EAST LONDON METROLOGY PARTNERSHIP
NB 0194 INSPEC International Ltd.
NB 0321 SATRA
NB 0326 Department for the Economy
NB 0338 Shirley Technologies Limited, trading as BTTG
NB 0347 NORTHAMPTONSHIRE COUNTY COUNCIL
NB 0350 CUMBRIA COUNTY COUNCIL
NB 0353 SGS UNITED KINGDOM LTD
NB 0355 Eurofins Product Testing Services Ltd
NB 0358 BUREAU VERITAS CONSUMER PRODUCTS SERVICES UK LTD
NB 0359 INTERTEK TESTING; CERTIFICATION LTD
NB 0362 ITS Testing Services (UK) Ltd
NB 0422 HAMPSHIRE TRADING STANDARDS SERVICE (HCC)
NB 0441 NOTTINGHAMSHIRE COUNTY COUNCIL
NB 0444 WANDSWORTH COUNCIL
NB 0463 AMTRI VERITAS LIMITED
NB 0473 AMTAC CERTIFICATION SERVICES LTD
NB 0480 BSRIA LTD.
NB 0486 MANCHESTER CITY COUNCIL
NB 0487 DERBYSHIRE COUNTY COUNCIL
NB 0513 ISOQAR LIMITED
NB 0514 FLEETWOOD TEST HOUSE, BLACKPOOL AND THE FYLDE COLLEGE
NB 0518 SIRA CERTIFICATION SERVICE
NB 0519 HEALTH AND SAFETY EXECUTIVE
NB 0520 GATESHEAD METROPOLITAN BOROUGH COUNCILDEPARTMENT OF HEALTH & CONSUMER SERVICES
NB 0545 POWERED ACCESS CERTIFICATION LIMITED
NB 0553 ST. HELENS METROPOLITAN BOROUGH COUNCILTRADING STANDARDS SECTION
NB 0558 KIWA LTD T/A KIWA GASTEC
NB 0561 THE GLAMORGAN GROUP
NB 0580 SCOTTISH BORDERS COUNCILPROTECTIVE SERVICES DEPARTMENT
NB 0594 YORKSHIRE AND THE HUMBER AUTHORITIES VERIFICATION SERVICE
NB 0602 North of Scotland
NB 0628 FIFE COUNCIL
NB 0632 The Cymru Group c/o Powys Trading Standards
NB 0669 ORKNEY ISLANDS COUNCIL OFFICES
NB 0673 TECHNOLOGY INTERNATIONAL (EUROPE) LTD
NB 0729 ABS EUROPE LTD
NB 0832 BRE Global Limited
NB 0833 EXOVA WARRINGTONFIRE
NB 0836 British Board of Agrément
NB 0843 UL INTERNATIONAL (UK) LTD
NB 0846 BURY METROPOLITAN BOROUGH COUNCIL
NB 0858 GlobalGROUP of Companies Ltd
NB 0870 LAIDLER CERTIFICATION
NB 0879 TüV UK LIMITED
NB 0888 Horiba MIRA Limited
NB 0889 UL VS Ltd
NB 0890 SGS UNITED KINGDOM LIMITED
NB 0891 Element Materials Technology Warwick Ltd
NB 0922 EETSA Ltd (East of England Trading Standards Association)
NB 0964 BRITISH INSPECTING ENGINEERS LIMITED
NB 1067 AV TECHNOLOGY LTD
NB 1088 Sound Research Laboratories (a trading name of SRL Technical Services Ltd)
NB 1104 Exova (UK) Ltd trading as Exova Warringtonfire
NB 1105 CCQS UK LTD
NB 1121 Exova (UK) Limited trading as Warrington Certification
NB 1125 RAILWAY APPROVALS LTD
NB 1133 SNC-Lavalin Rail and Transit Verification Ltd
NB 1143 ATKINS NOTIFIED BODY
NB 1144 SGS CORREL RAIL LTD
NB 1145 University of Salford
NB 1146 National Physical Laboratory
NB 1157 Altran UK Ltd.
NB 1180 SGS BASEEFA LIMITED
NB 1224 EXOVA (UK) Ltd trading as BM TRADA
NB 1244 UK Certification Authority for Reinforcing Steels
NB 1245 CERTIFICATION AND TIMBER GRADING LIMITED
NB 1266 ARROWHEAD INDUSTRIAL SERVICES LIMITED
NB 1288 WINTECH ENGINEERING LIMITED
NB 1289 Lucideon Limited
NB 1291 LIFT CERT LIMITED
NB 1314 EXOVA (UK) Ltd
NB 1333 THE QUALITY SCHEME FOR READY MIXED CONCRETE (also t/a Construction Products Certification)
NB 1334 Building Investigation and Testing Services (Surrey) Limited
NB 1351 AIR PRODUCTS PLC
NB 1520 PARSONS BRINCKERHOFF LTD.
NB 1521 HPi Verification Services Ltd
NB 1580 THE VEHICLE CERTIFICATION AGENCY
NB 1674 SAFENET LIMITED
NB 1675 HALCROW RAIL APPROVALS LIMITED
NB 1679 USW Commercial Services Limited
NB 1719 Impact Laboratories Limited trading as Impact Solutions
NB 1720 IFC CERTIFICATION LTD.
NB 1725 FM Approvals Ltd.
NB 1763 South Staffs Industries Ltd
NB 1766 VINCI Technology Centre UK Limited
NB 1806 Build Check Limited
NB 1845 Defence Electronics & Components Agency
NB 1846 Calor Gas Limited
NB 1855 Lucideon CICS Limited
NB 1902 BLACKWOOD COMPLIANCE LABORATORIES
NB 1942 CEM INTERNATIONAL LTD
NB 1978 BOC Ltd
NB 1992 MEL Aviation Ltd
NB 2019 West Yorkshire Materials Testing Service (West Yorkshire Joint Services)
NB 2056 SAI Global Assurance Services Ltd.
NB 2141 Reliance Technical Service Ltd
NB 2192 MMRA Ltd
NB 2205 Cylinder Testing and Sales (UK) Ltd
NB 2206 OTEAC Limited
NB 2207 Paterson (Safety Air Systems) Ltd
NB 2222 Blue Anchor Fire & Safety
NB 2229 Central Cylinder Testing
NB 2230 Gas Cylinders UK Ltd.
NB 2234 Safe Gas Cylinders Ltd
NB 2237 Sconrail UK Ltd
NB 2258 Dominion Technology Gases Ltd
NB 2263 Flogas Britain Ltd
NB 2273 Steel Construction Certification Scheme Ltd
NB 2314 Atlas Mastergas Ltd
NB 2334 UL VS United Kingdom Limited trading as UL-STR
NB 2337 Cambridge Fire Research Limited
NB 2377 Modern Testing Services (UK) Ltd
NB 2381 J and R Gases Ltd
NB 2389 TRADA Technology Limited trading as BM TRADA
NB 2400 TWI CERTIFICATION LTD
NB 2441 European Quality Assurance
NB 2444 Network Rail Certification Body limited
NB 2446 Calor Gas Northern Ireland Ltd
NB 2448 Pavement Testing Services Ltd
NB 2491 Lloyd's Register Apave Limited
NB 2495 Safety Services Agency
NB 2503 Certification Management Limited
NB 2524 West of Scotland Group Notified Body
NB 2538 4ward Testing Ltd
NB 2551 Centre for Assessment Limited
NB 2560 Flameskill Ltd
NB 2561 Hartford Steam Boiler UK Limited
NB 2571 TUV RHEINLAND UK LIMITED
NB 2583 Cranage EMC Testing Ltd
NB 2585 Ex Veritas Limited
NB 2599 Energas Ltd
NB 2623 CESA Global Ltd
NB 2635 Hursley EMC Services Limited
NB 2636 York EMC Service Ltd
NB 2642 SGS United Kingdom Limited
NB 2661 British Approvals Service for Cables (BASEC)
NB 2673 Ricardo Certification Limited
NB 2700 Interscience Communications Ltd
NB 2710 United Registrar of Systems Products Ltd
NB 2721 Certified Conformity Limited
NB 2731 Calibso Limited (trading as Bluesky Certification)
NB 2740 RINA UK Limited
NB 2747 Meridian Technical Services Ltd