I hear you about weighing at home too, aha. When I was at uni my housemate had scales so I'd weigh myself after bad nights/mid-way through the week. Honestly though, it didn't really help, as sometimes I'd be the same/more mid-way through the week for whatever reason, but actually lose come official WI day.
Luckily, my parents don't have scales at home, so as I'm with them over Summer, they can't upset me in the week :P
Ahh good luck! New stone zones are always exciting! I get my full stone awards, then 2.5lbs later get into a new stone zone which is nice. Then it tends to drag a bit :P
Aw well done on the new clothes sizes

I still look in the mirror now and say some variant of "For god's sake", it's the curse of a slimmer's mind :P