We've recently cancelled DDs swimming lessons, she was at a point where we needed to decide if she was going to compete/take it seriously but she's far more interested in riding. Cancelling swimming has also meant cancelling the gym for DH and I as we don't get anywhere near enough use out of it. I love my gym, so I'm quite sad, but it's saving us £220 a month in total.
We've also cut back on food costs, traded in the diesel 7 seater for a petrol 5 seater, I've given up teacher training as just can't afford all the childcare and extra costs (fuel, professional clothes, dog sitting, cleaner etc etc).
We've also cut out takeaway coffee, paid for weekend days out (have National Trust membership and English Heritage to fill the gap). Holidays abroad will be a no-go after this year. We booked out first ever week abroad last year, to go this summer, as it's a big anniversary for us and we didn't have a honeymoon. Won't be able to do it again for the forseeable.
No new clothes other than absolute essentials.
Not putting the hot tub out all summer as can't afford to run it that much. May get it out for a month or so when the sun is at its best to capitalise on the solar generation that will offset.
We are incredibly fortunate though. We will have UK holidays, a stay at home parent (mostly due to a disabled DS, but nevertheless it's a privilege), won't be worrying about food, can continue to run two cars etc. No complaints at all.