Ok... So I had the Lexus cleaned yesterday at my local hand wash, there were about 15 staff there and they did a really good job to be honest...
They used a power washer and a few different detergents, they used the wash mits not sponges, microfibre cloths and dried it with a chamois, they cleaned all the glass so it's sparkling, even opened the doors and boot to clean the seals and stuff, cleaned the wheels and have them a little shine...
I feel like I robbed them for £6... ;)