Growing up in London, while I later knew the qualities of Thames, as a kid that was always the "boring" one and LWT was the "fun" one.
Thames was quite minimalist, possibly even stilted, in its style and presentation around 1990ish but made up for it as a massive producer of networked programmes. However, one could argue that there was a certain beauty and elegance to its minimalism.
TVS started up in the morning with a short film showing scenes from the south east with its signature tune thundering in the background whereas Thames started up just with its jingle, but did it
need anything more than this? There where times when I thought that the new 3D jingle used in 1992 was over the top and even slightly tacky.
In contrast, LWT was bold and brash.
Living in the South, for me TVS started out stylish, but ended up a bit tacky
It was all about contrast. Southern appeared to design its presentation for black and white TVs, then TVS treated viewers with a spectrum of colours. The facelifted TVS in 1987 was very slick and glitzy for its time.
At the discussion about the best and worst ITV companies, HTV came off quite bad as well. It's presentation looked 1970s and there also appeared to be more IVC than with other ITV regions. It also wasn't a significant player when it came to networked programmes.