I study at Warwick, have just finished my first year. As someone who has seen their share of sexual misconduct at the university, yes, it is taken seriously.
Starting in October, two girls became infatuated with me and began making these highly explicit sexual comments about me, which I found extremely disturbing and traumatic. This ruined my entire term, and I was afraid of returning. As a result, I passed my concerns on to the residential team, who took it very seriously.
As a result, the entire flat was ordered to attend a meeting, without me of course, to discuss why this was happening. I was further presented with the option of making a formal report, which based on what I've understood could have landed someone in serious trouble if I did that and attached all the offending screenshots.
The girls got terrified and immediately stopped. So yes, it is taken very seriously.