I work from home as often as I can to save on petrol and parking charges (no viable public transport connection that I could use instead). I think it saves me about £15 a week!
Always air dry clothes - just got into the habit at university so never saw need for tumble dryer.
Bar soaps are way cheaper than liquid.
Always bulk buy detergent on promotion
Luckily am very introverted so tend to stay in on the weekends to do my hobbies (music and reading (free online resources) so no additional cost).
I put my clothes onto a rotation so that 1) I can save storage space and 2) I feel excited about wearing my old clothes - I look after them so sometimes someone will compliment me on a new item, when its really 5 years old. I keep my clothes looking fresh and presentable by wearing loungewear in the house and only wearing my proper clothes if I'm going out.
One for musicians: I always download my music scores from IMSLP so I haven't needed to buy any new music for years. Having said that, I did get gifted some lovely Paderewski editions of Chopin Waltzes and Mazurkas recently which I really treasure (so much nicer than reading from a laptop!). I also used to scour charity shops for cheap editions of music scores.
I used to visit a charity shop in a very upmarket area where I found a lot of very nice barely-worn clothes. Most of my evening wear is from that shop - bought and FCUK dress that was still full price in the shops for £10 (full price would have been £150!)
We use our credit card for everyday purchases and fuel for the cashback rewards. We budget this carefully though
I use exfoliating pads similar to these www.amazon.com/Hair-Removal-Pads-Piece-2-Pack/dp/B00T9U3NA6?tag=mumsnetforu03-21 to remove leg hair. Overall it's much cheaper than razors, and now that I just have to replace the pads it's more environmentally friendly too. An added bonus is that you end up with nicely exfoliated skin as well.
Will always try and source furniture second hand/free rather than pay for it. Lots of people just want to get rid or their old cabinets/sofas so will give them away for nothing. Found some really nice high quality and antique-looking items like this. Can then sand and polish as required to make them look nice.