I'm on the lookout for changes on the afterpay site which indicate a UK launch is coming, so far nothing.
For the store counts try these:
AUS: https://www.afterpay.com/en-AU/stores/search?q=%26+%23+a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t+u+v+w+x+y+z+1+2+3+4+5+6+7+8+9
NZ: https://www.afterpay.com/en-NZ/stores/search?q=a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t+u+v+w+x+y+z+1+2+3+4+5+6+7+8+9
US: https://www.afterpay.com/stores/search?q=a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t+u+v+w+x+y+z+1+2+3+4+5+6+7+8+9
AUS Instore: https://www.afterpay.com/en-AU/stores/search?q=a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t+u+v+w+x+y+z+1+2+3+4+5+6+7+8+9&has_in_store=true
NZ Instore: https://www.afterpay.com/en-NZ/stores/search?q=a+b+c+d+e+f+g+h+i+j+k+l+m+n+o+p+q+r+s+t+u+v+w+x+y+z+1+2+3+4+5+6+7+8+9&has_in_store=true
