Hi just moved jobs and looks like I'll be doing a lot more travel to the far east. Not really been taking my current flyer memberships seriously so need some advice. What scheme will get me quickest access to silver level?

(1) What is your home airport? EDI or GLA (so can change various places eg LHR, LGW, CDG, AMS)
(2) What types of fares do you usually buy ? Premium Economy
(3) How many miles do you usually fly each year? approx 50k
(4) Do you have any kind of status at present? What is it? not anything worth writing home about.
(5) What is most important to you in a FFP? Lounge access, upgrades
(6) Which routes do you fly most often GLA or EDI->Taiwan, Korea and Japan 4 or 5 trips a year. GLA or EDI -> LHR
(7) Preferred Airlines Something with decent premium economy to Asia
(8) Do you travel for work or pleasure? Work, choice at the moment is economy or premium economy but should be allowed some business class travel from next year (assume not for now).

Thanks in advance for any replies.