12 lbs? I'd say so... how many lbs has it taken you to drop sizes in the past? I think only you can really work that out as our bodies are all unique, but on average I'd say its probably enough.

should be. when I got to 135 last time at 5'2" I could fit some 10s.
honest. not many. but some.

So hard to say, l'm 5'7", and last time I was size 10, I was about 138-145#, and you're already there. Below that I was size 8.

Right now I'm 142.6 and have been able to fit some size 10s for about the last half stone - but not all. And I have big boobs so am in a size 12 top.

I have another half stone to go and I expect to be able to fit into any size 10 from anywhere once I get to that weight - and maybe even size 10 tops too. but that might have to wait till I have totally weaned my daughter and the F cups go down a bit.

I think UK sizes are different. From what I understand, a size 10 in the UK is a size 6 here in the US.

I'm 5' 5" and I was in a US size 6 (UK size 10 I believe) when I weighed 135-ish (This was years ago.) I wear a US size 10 right now at 155 lbs. For me a 10 lb loss equals a size most times.

Uh, well then, I only fit into an occasional US size 6 (UK 10) when I was about 128 (my lowest weight beyond early college), so I'd have to be less than that to really get that size.

I'm also 5 foot 6 but when I've been a 10, I've been 10 and a half, even nearly 11 stone! I used to be a size 6 (til I had kids - damn!) and even that tiny, I weighed a good 9 and a half stone. Must have really heavy internal organs or summat.... Oddly I had a friend at uni who was identical size to me - with a 22" waist and looking really skinny, we were both still a good nine and a half st.

I look best around size 12 - which is 11- 11 and a half st, actually at the heavier end of that.

I used to find 1 st = roughly 1 dress size. Not always! But last time I was a really fit and healthy size 12 (and still going down), according to my BMI I was still teetering on 'overweight' - at only 5 foot 6 - so I think it's all a load of nonsense, really.

Overall though the last time I dieted I lost 40lb and 5 dress sizes so some shape changes are not equal to others, re. weight reduction....

Of course . It's just that you didn't also turn my brain to the "on" position. Or maybe you tried, but the switch was utterly stuck in the "off" position .

I don't know about UK size >.<" But:
at 126 and 5'6, you'll probably fit into size 4/6 US depends on your body type. Since i know you exercise regularly so i would say maximum size would be 8 US.
Altho it's hard to know for sure unless you go down to that weight. Everyone is different after all.