In most cases yes, with a bit of clearance — it's a common situation and not the blocker people fear. Slim, low-profile passive tile vents (the small ridge or slate-line vents that let the roof space breathe) are routinely fitted under or beside panels, and owners who've done it generally report no ventilation problems afterwards as long as there's a little air gap and the vent isn't sealed shut. Installers plan the panel layout around roof features all the time — chimneys, Velux windows, soil pipes, vents — leaving a sensible clearance (often around 20 cm) so airflow and access are kept. It's really a layout-and-mounting judgement for your installer on a site visit rather than a flat no.
The one to be careful with is a powered or extract vent — a cooker hood outlet, bathroom fan, or boiler flue that actively pushes warm, moist air out. Smothering one of those directly under a panel is the kind of thing owners flag as a genuine install defect, because it can trap moisture. That's different from a slim passive tile vent, so it's worth telling your installer exactly what each vent on your roof does.
Timing helps too: if you're re-roofing or having any roof work done anyway, get the mounting clips or rails fitted before the slates or tiles go back on — it's far cleaner and cheaper than retrofitting brackets later. So the honest answer is it's commonly fine, it depends on the vent profile and clearance, and you should confirm the final layout with your installer (and coordinate with the roofer if a re-roof is on the cards).