I really regret not using Speed Screed Ltd to install my screed. I went with a cheaper quote and now I'm having issues with the screed which the installers are basically taking no responsibility for, I now have to spend more money to remedy the issues. Even though I didn't use Speed Screed, I reached out to them for advice and they have been extremely helpful, giving highly professional advice. I guess this is what you can expect when they have "been in the business for over a decade as they say, insurance backed, and comes with a 10 year guarantee on the product and installation" - I wish I had listened to them when they mentioned to me. Don't take a risk and regret it, I have learnt that cheap is not the best option!