Having been here 5 years, I have since renewed my Texas license, using my parent's address....but somehow, it got lost in the mail....so outside of having it renewed 'officially' (as far as the Dept. of Public Safety is concerned), I don't have the physical proof (until I go home again). However, the last time I was home, I used my UK license to rent a car......no problemo! I didn't see the need to keep the license renewed just for renting cars? I did give them the Texas DL number, but they preferred the UK one as I had a picture on it.
I look at it this way.....at this point, my UK license makes me more qualified to drive in the states than before. I mean, for those of you who have gone through the hassles of the UK license, you will attest to the fact that a lot more things are covered on the test and it makes you better prepared. But as long as I can continue to renew....might as well have it covered on both sides of the pond! (some states will let you renew by mail...might be worth checking out)