I don't get blight warnings now, but they were so helpful & I feel this consistent rain/drizzle would provide humidity to trigger an alert. I was given a new website for alerts & I dutifully filled in my details for them to contact me, but unsure, as got no response & a right hassle to fill in as said one of my settings was too high, but had no idea what it was? I just e-mailed them with my details in the end, but I will try to find it & share with you all as everyone else on the site got acknowledgement. The farmer's potato site still gives warnings but you have to go on & check as they don't contact you.
In the interim I was recommended a product you mix up in the watering can & apply it weekly to spuds & toms, last ages as had my bottle for 2 yrs & still a bit in it! I did not get blight last year but there was some on the site. Could just be luck!
Back to lucky you Primrose having a ripe tomato! Not too disappointed as do have toms to come, but the bought ones I am currently using are pants. They go soft & get mildew (?) spots on them despite rinsing & hardly last a week.