Linda and Meryaten, thank you for the opinions. They've really made me think about this and reconsider.
It had occurred to me about the bite impacts which are definitely more important than aesthetics. I'll see what my ortho thinks, but you're right. It's not that bad, and it's probably only me that notices the triangle.

As for the lowers, I think you're 100% right. The last thing I want is a smile that looks like veneers. I want people to know my teeth are natural! I get very fooled by what is the "ideal" look of teeth, but I realise now that there isn't one; everyone's teeth, straightened or not, are different.

This has really put my mind at rest over the matter. Much appreciated for everyone's views!
Sim