You will probably find that every retailer mentioned in the following list has localized sites for their own country, offers worldwide services, or has local distribution services:
- Farnell/element14/Newark: http://www.newark.com
- RS Components: http://www.rs-components.com
- Amazon: http://www.amzon.com
- eBay: http://www.ebay.com
- Tandy UK: http://www.tandyonline.co.uk
- Maplin UK: http://www.maplin.co.uk