We chose Global to help us with a myriad of damp problems we discovered shortly after buying our new home in South London. We chose Global due to the good reviews we had read on Which, and I???m now very happy to add my own as they were terrific from start to finish. This review ended up being quite long as I had a lot to say, so if you want the TLDR version: Global are excellent! The survey they initially performed was extremely thorough, and Mr Somerville was very knowledgeable and helpful in his assessment of the issues. The person above (im123) who says that ??75 is expensive for the survey is ill-informed. We had several surveys done prior to choosing Global, and the free ones weren???t worth the paper they were written on. My advice (and also the advice in the Which? article about damp problems) is to pay for a proper survey, and Global deduct the cost of the survey if you go ahead with the work. A very sensible approach for all involved. Global treated penetrating damp on our exterior walls, removing the 50+ year old render and re-rendering the whole wall. They treated rising damp in the property through the installation of telescopic under-floor vents and injecting damp-proof course into the brick work. The walls were all treated with special chemicals to ensure they stay water tight. We replaced all our windows and doors with triple-glazed options and installed a daisy-combi unit to regular the airflow within the property. There were also problems in our gutters which were all resolved. It was a huge job. We were so happy with all the work they did that we even got them to replace some internal door frames, our back entrance gate, and all our radiators as well. All the work was carried out in a timely manner, and good advice and information was given at each stage. The property was left clear and tidy (as much as possible) at the end of each day. I tend to get stressed when work is being done in my place, but Sean and his guys were very friendly and professional which put me at ease. On the Admin side Global were great as well. As other reviewers have mentioned, they use Transpact for the escrow on the payments, which is very sensible and gives you peace of mind that they are acting responsibly. As various milestones were reached I was able to log into the website and authorise the next amount of the money to be paid, until making the final authorisation upon completion. Alexia and Anisa were both great at answering my questions on the phone, and paid us a visit at the end of the project to make sure we were happy. Honestly I can???t rate Global highly enough, and I would whole-heartedly recommend them for a Which? Trusted Trader status. While they are not the cheapest company we found, the value for money was very high. I???m glad we didn???t take the cheaper option!