I headed to M&S because they always have loads of great underwear that's not just for the golden oldies. I booked a bra fitting appointment (I think you have to book a time at most places) and left with some gorgeous underwear at the right size and a good price - winning!
I thought I would do this post as they are offering £5 off when you spend £30 on lingerie after you've been fitted at M&S (I spent about £70 and they were legends and did two transactions, so I saved £10!). It literally took about 40mins in total after I tried a bunch of stuff on and the lady that was helping me was lovely. I definitely recommend going if you are in need of a little boost ;)
Ps. For anyone who is worried, you don't take your bra off. They simply measure under the bust and then they pick two cup sizes they think you are and look and see which fits you best! You will be surprised how wrong you can get it and how much one style can look amazing and another not so much.