Channel 4 split itself into 6 regions based mainly on the ITV structure (apart from Wales where S4C was operating). This gave Channel 4 an opportunity to split itself into relatively unique commercial regions where advertisers could sell their products using a target/regional market. Channel 4 catered for a smaller market, allowing advertising revenues to be cheaper than ITV, therefore appealing to smaller establishments.
One method that Channel 4 swooped on was a form of unique selling, pictures and download available below...
See the whole advert
If you have similar content from your "Channel 4 Region" please feel free to give to TV Archive
Nowadays, Channel 4 doesn't utilise its regional ability as mach as it could, with regional adverts becoming rare. However the regions are still there, as proved by this 4-Tel Clock Cracker...
All images and downloads captured by Mark Snowdon for t|v|a