Counts update17 May 2020 20:02
I've been counting most days and it's remained at 130 locations / 633 restaurants.
At some point today or yesterday, two restaurants dropped off the platform. Bengal Lounge Poklington and York (both listed under York). This is interesting, as it shows a couple of things. Restaurants can be removed from the platform if they want (restaurant data isn't frozen since March) + more importantly, given that restaurants can opt-out, we've only lost two. Food for thought.
My feeling is that we'll lose multiple restaurants that have gone out of business, but that we'll continue to add new restaurants at the pre-covid rate.