Charge Plug

Hey,
I'm one of those short people (about 5,5ft - 170cm) and I would really like to purchase Charge Plug Grinder bike. I checked Small size at Evans last year but it is slightly too big so it might be a bit risky in some situations. ;)
So now I'm looking for XS version but it is only listed at Charge website. I checked all online shops and I have never seen an actual XS version available at any shop. I emailed Charge but there was no answer from them since they do not sell their bikes.

Maybe anyone here could give me some advice?

Thanks!

I'm a shortarse aswel, any look on finding an XS to try out? I'll have a look round here (manchester) and let you know if I find anything.