Hi, I use Nick & Trick. They are fairly priced and none of this gimmicky re-badged film.
They sell the Adox dry chemicals, far cheaper to post than liquid.
Mr Cad in London has everything one would ever want, but can be a bit pricy.
For B&W film, only a few things are needed, so I found it easier just to buy a new Patterson tank and changing bag.
Thermometer, I bought on Amazon, a digital one which allows home calibration using boiling water.
Many people don't use a water bath, but I do and just used the washing-up bowl.
Again, rather than mucking about adding hot or cold water. I bought a cheap sous-vide on ebay. Make sure it goes as low as 20 degrees, many don't.
I did not bother going back to wet printing, too much faff. So I bought a negative/slide duplicator on Ebay, attaches to a digital camera to digitise the negatives.