I suppose if you can get a fax or jpeg file with the president of Lifedoll or designer of a Lifedoll model signing off on a statement as to the intendended age representation of a particular doll(?).. always good to have.
Dont know of any Lifedolls purchased after UK's insane "Coroners & Justice Bill" "passed"

last year
http://www.sankakucomplex.com/2009/03/09/uk-bans-loli-all-children-are-victims/ . ...but the only Lifedolls(s) in the UK that were purchased prior had the
big boob option, such as Gibmoddel's F-cup+ Milfe small original body.
I know Artist69 barely got approval as an "18" doll from a few members of TDF management for his former "A-cup" small petite Lifedoll Miho... and Blueyes still gets his Doll Album pics of the same doll as Artist69's but with a Mie "oral" head pulled by certain in TDF management because certain in TDF management claim it looks like a "14 or 15 year old".
Sure nearly all the dolls have gotten thru UK customs prior except Kevtra's.. it just depends on what town you live in or what feminist or religious crackpot happens to be working then.
Of course in the USA one could just sue in multiple jurisdictions for racism, discrimination, hate crime yada yada & possibly retire as a multi-millionaire with ACLU friend of the court brief. Even the author of the Watchmen Alan Moore in the UK with his Lost Girls art book made them be the one to blink & have egg on their faces in the International Community if they tried to ban the book in the UK.