No, not really. The time to change lira into Sterling was when it hit 2.1 (ish) to the pound. Of course if the rate continues to slide to 3/£ and higher, now is a relatively good time. Personally I don't see that happening. As a short term volatile currency, the lira has managed to maintain itself as a long term predictable one, a 2.2-2.8 banker. Change lower than 2.35 or take your chances.