My work is pretty good about it.

I take two breaks a day (three, if I'm working particularly late) and I take about an hour each time to relax for a few minutes, express, bag up the milk, and clean my gear.

I make up the time, and am not working any less because of it! But I take it, and generally no one other than my secretary interrupts me and she only does so by phone, and if I don't want to answer I don't.

In my old office, there were floor to ceiling window-walls with no covers... so an empty office used for storage was reorganised and set up with a comfy chair etc, for me to use.

My current office has frosted glass to the internal doors, and the outside windows aren't on the ground floor, so I just express at my desk. It's feasible that there's people sitting on the other side of the road watching me and having a perv, but it's unlikely and I certainly haven't noticed anyone sitting there looking out, so I just get on with it. I wear a pashmina as a scarf most days, and could always use that if I felt the need

I clean up the pump etc in the kitchen sink, and I store my milk in the staff room fridge/freezer. Some people might think it's odd or gross, but no one has said boo to me, and I imagine nothing will change on that front.

I also catch the train, and I have a little Avent travel bag, and I put the milk in the freezer once it's pumped. The morning pump is always frozen by the time I go home, and it keeps the afternoon pump cold on the hour home!

If ever I'm out all day, I organise a pumping station (!) in advance. Have had to do this for conferences, mediations, court trials and more. I've never been unable to organise something. The only real difference is I take a microwave steriliser to use as a drying rack inside my wheely case, I take LOTS of paper towels, and I pack frozen primas into my freezy bag to make and keep the milk chilled until I can get to a fridge/freezer.

HTH.