I started treatment early 2018 and finished a year later - it was definitely the best thing I ever did for my smile. Straight Teeth Direct were always on time with my monthly check-ups and made sure I was progressing as planned before sending me my next aligners. I did need refinement aligners at one stage because my teeth responded differently than expected (something they made sure I understood before beginning treatment!), and it was never a problem as all the required aligners were included in the price. Whenever I had questions they were answered fully and patiently. I really can't fault the process, and my results are second to none. Since finishing treatment I've been on their Maintainer Plan to make sure my teeth stay in their straight position (again, Straight Teeth Direct made sure that I understood before treatment that, after any alignment, permanent retention is required either through removable retainers or fixed ones). The Maintainer Plan is ideal for me, as I have very stubborn teeth that like to move, so receiving fresh retainers twice a year to keep them straight and having the option of receiving a few corrective aligners in case my teeth do move again is so worth it. I also used their whitening kit and it gave my end result the perfect final touch! All in all I couldn't be happier and I have recommended their service to loads of my friends (and anyone else who will listen hahah).