No vinyl company usually advises for sun exposure in conservatory and will really allege no liability when colouration changes on different areas all depending on angles and areas always in some shade and others more close to glass more heated. Don't use glued ones, use underlay and click-system ones. I used to work for Howdens and good value for money. Where are you based?

Would definitely recommend LVT, we have a marble stone effect in our bathroom and were really pleased with the outcome. We chose a quick-step floor from stories flooring, here is the link Hope this helps :)

When we moved into our current home, we took up the ancient orange bathroom carpet tiles & used cheap wood-effect stick on vinyl tiles from Homebase. I think they were in a value range & they did the job while we were waiting to renovate. This was 8 years ago but I’ve just had a look at their website & they do various colours in adhesive vinyl tiles. Another option is sheet vinyl from a carpet / flooring stockists- you may even find an off cut or roll end at reduced price although you’d need to factor in fitting costs.

There’s a programme in the afternoon with Tommy Walsh whereby a cleaning expert always uses bicarbonate of soda to clean mucky areas. To the soda she adds white vinegar (which makes it fizz) and a small squirt of washing up liquid. She then uses a cloth to clean the area. Now I’m not sure it will work for you but worth a try?