I distinctly remember going to the original Homeslice in Covent Garden a couple of weeks after it opened back in 2013. I hadn't tried the foodtruck before, but sometimes you just feel like a 20" pizza to yourself.
In my opinion the pizza quality itself wasn't in the realm of Franco Manca, but what they did have was an excellent creative bunch of toppings that was quite left field. Back in 2013 it was a half bone marrow/spring onion/watercress and half pork belly/chimichurri/smoked onions.
This time is was a half chorizo/corn/coriander and half xo pigs cheek/collard greens/crackling furikake. The 20" size and thin floppy crust means that each 1/8th slice is easiest eaten almost folded over into triangular sandwich. The toppings are nice and a little sparse for the size. The crust is reasonable but without much intrinsic chewiness and salt to it.
It still looks mighty impressive. Even though the toppings are different, I can't say I enjoy them more than the standards or even standard gourmet pizza toppings. I'll wait to go back to Franco Manca to pass my judgement first, but I can't see Homeslice being my go-to pizza place in London.