Contact, site visit and quote, all quick, easy and efficient. Price very competitive. Time and date agreed and kept. Work carried out by skilled, considerate and tidy staff. Problems developed with Wi-Fi connectivity. Over the next period, every effort made to resolve issues including further site visits, replacement kit and close monitoring. Issues resolved to my satisfaction and all in a friendly and constructive way. Problems were NOT caused by TES and every effort was made to find satisfactory solutions. Issues around additional cost incurred were resolved easily and without any difficulty. Overall, an excellent experience and I highly recommend TES.