Lake CX401 sizing

I think I am going to get these now as I can get them on wiggle for £254.
Anyone else normally a UK 10 (in normal shoes) and have Lakes?
I was thinking I need a 45 in the Lakes. Is this about right to try first?
Anything else I need to know? How should they feel before heating? A little more snug than usual?
Am guessing that size wise I just need to make sure they are not too small in length?
Thanks in advance for any help
Anyone else normally a UK 10 (in normal shoes) and have Lakes?
I was thinking I need a 45 in the Lakes. Is this about right to try first?
Anything else I need to know? How should they feel before heating? A little more snug than usual?
Am guessing that size wise I just need to make sure they are not too small in length?
Thanks in advance for any help

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The 236's were the comfiest - the 331's are more racey, stiffer, with less padding inside.
I would consider the 331's because I think I'm right in saying they came out after the 401's as a more affordable alternative, and I can't see much difference between the two. (I paid about 180 I think).
I'm a 41 in Sidi, and a 41 Lake fits me fine.
To be honest, I found that the whole heating process didn't change a great deal in the fit. I followed all the instructions carefully, and the shoes were toasty warm, but not a whole lot changed. If anything, they dug in slightly around the side of my heel, so I did a reheat, and didn't press them in so much.
My 1st few rides felt a bit uncomfy and I wondered if I'd done the right thing changing from the 236's. But the 331's broke in nicely, and now they're 90% as comfy as the 236's (i.e. very).
They're also extremely light and stiff, and the Boa works great - even better than the 236's.
I know Bonts are held in high regard, and I haven't tried them, but for me, these Lake's are the best shoes out there.
I am sure there is a fitting guide on the Lake website
I'll check out the Lake site but just wanted to see what you guys said too.
To be honest its the colour/design that makes me want to go for the 401's over other options.
I am getting Speedplay specific ones too.
I should add that one of the ratchet straps broke on one shoe (after a year's use). Luckily these are replaceable and easy to source. Also Bont have announced some new designs which look far more appealing.
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