Proto-PIC is a distributor of electronic items like the Arduino modules, and sells learning items and works with schools, universities and other educational organizations around the UK working collaboratively to develop computer science and electronics in the classroom.
https://proto-pic.co.uk

Oemsecrets is an electronic components search engine and directory which lists over 20 million lines of electronic components and their prices. Working directly with hundreds of suppliers and manufacturers this website provides accurate prices for electronic components, whether you want to buy per piece or wholesale, making it easy for consumers to get the best value for their price. Oemsecrets has answered the need for price comparison on the electronic components market. 

https://www.oemsecrets.com/

www.newelectronics.co.uk
New Electronics | The Latest Electronics News, Technology Updates and Innovative Product Design for Electronic Design Engineers.