I had a 5x2m lantern and 6m sliding aluminium doors installed by DWL and can say this was one of the best purchases of our renovation. The products themselves look great - can't be faulted. Also, everything from the conversation with the sales team, the surveyors visit, installation through to the after sales, was of the highest quality. I was particularly impressed by the installation team, who were efficient, clean and polite (to the extent that they asked if they could smoke in the garden or had to go offsite!). And I'm hard to impress. I've brought Aluminium products before, but would definitely be coming back to DWL in the future.