timing chain 1998 c 180

gents, and ladies, i inherited a c class, 1.8 petrol few years back, my first foray into the marque, it has proved a fantastic car, its old but still worked well ! It has at the mo nearly 190000 miles on the clock and was continueing to be reliable until two weeks ago, it needed a coil pack. 3 days ago, a slight bang , not too loud and nothing, sounded like no compression and i have just pulled the top of it and confirmed,brocken timing chain ! Firstly, is this a non interference engine, or is it all bent ? Secondly , can i fit a new chain without removing the head ? If a chain is cheap enough then i will repair her but I fear it will be scrapped .
Yours in anticipation, Scott