Gosh, I've never removed seeds from tomatoes...

In Italy they grow San Marzano tomatoes, big plum-shaped ones, that have hardly any seediness in the middle, for making sauce. I tried growing them here last summer but they caught every blight, wilt and rot under the sun (unlike my Sungold cherry toms, which get the blight but fight through it really well). We don't really have a great climate for tomatoes in Cornwall, what with cool summers, occasional windiness and high humidity. Many years ago I grew tomatoes successfully outdoors just outside London, where it's a bit drier and warmer than Cornwall.   

We're on covid-19 tenterhooks here, due to a friend-of-a-friend being with the friend and the friend then being with us, all unbeknowns. We are testing every day and keeping away from people if we can, though we spent several days in blissful unawareness. We reckon to be safe by Friday if the tests are all negative. I've looked all the timings up today.