Had two problems wiyh the car today.

First, the coolant warning light came on dash. Checked and found coolant level had dropped in the reservoir. Topped it up and will monitor it over next few days. Any common places to lose coolant?

Second problem, the brakes started to make a horrid noise today. Ive posted on here a few days ago about an occcassional squelching noise when braking at low speeds. Well today its progressed to a very loud squealing, squelching and rattling noise. Not had chance to rwmove wheel and inspect properly, but disc appears to be fine, no lip on edge and pads look to have plenty of life in them. Any other suggestions?