There was lots of diversity in styles that was all killed off by the bland homogeneity of ITV since the Carlton and Granada takeovers of the late 1990s. The modern ITV graphics and jingles are not as bold or as brassy as many of those from the old companies. The Thames jingle with the reflection of London in the river is generally regarded as a classic but it was well known nationally. There are some oddities like the Ulster 'oscilloscope' screen and the abstract art of the TSW logo that takes a bit of thinking to work out what it is that were rarely seen outside of their broadcasting areas because they didn't network many programmes. The new style TVS material like the spinning trident and TVS logo is very striking. I think that Granada graphics are a bit dull for such a large and prominent ITV company.