前言：CE认证,欧盟认证,EC证书
随着英国脱欧，进入英国市场的产品，适用UKCA认证取代之前的CE认证。进入欧盟市场的产品继续适用CE认证。
进入欧盟CE认证，根据产品类别，划分了不同的指令，比如PED指令主要适用承压设备，ATEX指令适用防爆产品，LVD指令适用电子电器产品等。脱欧后的UKCA，类似CE，不同类型的产品，也划分了不同的法规。目前来说，CE和UKCA的要求基本是类似的，但在表述及一些细节上是有区别的。下面荣仪达认证整理了CE指令和UKCA法规的对比，供参考。
| 序号 | 欧盟CE指令/法规 | 英国UKCA法规 | |
| 1 | RCD | Recreational craft and personal watercraft - Directive 2013/53/EU | Recreational Craft Regulations 2017 |
| 2 | PED | Pressure equipment - Directive 2014/68/EU | Pressure Equipment (Safety) Regulations 2016 |
| 3 | SPVD | Simple Pressure Vessels - Directive 2014/29/EU | Simple Pressure Vessels (Safety) Regulations 2016 |
| 4 | MD | Machinery Directive 2006/42/EC | Supply of Machinery (Safety) Regulations 2008 |
| 5 | EMC | Electromagnetic Compatibility - Directive 2014/30/EU | Electromagnetic Compatibility Regulations 2016 |
| 6 | LVD | Low Voltage Directive 2014/35/EU | Electrical Equipment (Safety) Regulations 2016 |
| 7 | RoHS | Restriction of the Use of certain Hazardous Substances in Electrical and Electronic Equipment (RoHS) - Directive 2011/65/EU | The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 |
| 8 | RED | Radio equipment - Directive 2014/53/EU | Radio Equipment Regulations 2017 |
| 9 | CPR | REGULATION (EU) No 305/2011 | Construction Products (Amendment etc.) (EU Exit) Regulations 2020 |
| Construction Products (Amendment etc.) (EU Exit) Regulations 2019 | |||
| 10 | ATEX | ATEX - Directive 2014/34/EU | Equipment and Protective Systems Intended for use in Potentially Explosive Atmospheres Regulations 2016 |
| 11 | NAWI | Non-automatic Weighing Instruments - Directive 2014/31/EU | Non-automatic Weighing Instruments Regulations 2016 |
| 12 | MID | Measuring Instruments - Directive 2014/32/EU | Measuring Instruments Regulations 2016 |
| 13 | LIFTS | Lifts - Directive 2014/33/EU | Lifts Regulations 2016 |
| 14 | PPE | Personal protective equipment - Regulation (EU) 2016/425 | Personal Protective Equipment Regulations (Regulation (EU) 2016/425 as brought into GB law and amended) and the Personal Protective Equipment (Enforcement) Regulations 2018 |
| 15 | Toy | Toy Safety - Directive 2009/48/EC | Toys (Safety) Regulations 2011 |
| 16 | GAR | Gas appliances - Regulation (EU) 2016/426 | Gas Appliances Regulation (Regulation (EU) 2016/426 as brought into GB law and amended) and the Gas Appliances (Enforcement) and Miscellaneous Amendment Regulations 2018 |
| 17 | NIOSE | Outdoor Noise Directive 2000/14/EC | Noise Emission in the Environment by Equipment for use Outdoors Regulations 2001 |
| 18 | 生态 | Ecodesign Directive 2009/125/EC | The Ecodesign for Energy-Related Products Regulations 2010 |
| 19 | 能效 | Energy Labelling Regulation (EU) 2017/1369 | Regulation (EU) 2017/1369 |
| 20 | 烟火 | Directive 2013/29/EU - Pyrotechnic Articles | The Pyrotechnic Articles (Safety) Regulations 2015 |