Yes! Me too!
I use Faith in Nature for shower gels but they do hair care and soaps too. They’re stocked by Holland&Barrett, Ocado and Boots and they have their own website.)
Jason (daft name but good products) are good for shampoos. They are in Holland&Barrett, on Ocado and they have their own website.
I use a heavy conditioning masque on my hair from the Shea Moisture range available at Boots, Superdrug and elsewhere.
Soaper Duper is now stocked by Boots (instore not online) as well as Tesco. I’ve never used it but it’s been well reviewed by Sali Hughes in The Guardian and it’s next on my list to try.
Lots of the pricey and or organic ranges are SLS free like Neals Yard and REN (check the labels)
Some of the alternatives to SLS leave my skin feeling tight, though not itchy, so it’s trial and error as to what works. I found the Love Beauty & Planet range (Sainsbury’s and elsewhere) smelt lovely and was a good price but was no good for me when used daily.