Hi all,
Sorry, I missed the notifications from this thread! There's a shower at work, and no problem leaving clothes there - it's just a bit silly for a 4km commute. I previously lived 12km away (same office) and that's what I did.

Zip off pants are the best solution I have atm, but they're quite noisy to walk in, and not really formal enough for meetings.

Still, some good ideas here I'll look into.