Thanks for the links, but online ordering makes me really nervous. I guess it depends how many measurements you can give them. Most of the slim cuts with a big enough drop for me usually have pants with far too small rear and thigh. In these circumstances, no face to face contact seems to mean trial and error, as I'm not so well informed on the intricacies of custom tailoring.
Yeah, online MTM tailors are a dime a dozen. I only listed the ones that I've heard (and used myself that) are good. Pernac, for example, you can get measured at various locales within Australia (don't think WA, though, and their prices vary depending on the fabric, naturally). I haven't listed Modern Tailor or Indochino, for example, as they appear to get more things wrong than right. But those listed are probably the safest bets in regards to online MTM. Again, it's probably best to use those if you're located in such an area that makes face-to-face tailoring difficult or impossible. And remember, it's trial and error even with in-person MTM/bespoke, especially the first time around. Perfection (or even close to that) takes time and work to achieve.