Hiya, the vet was very good, very reassuring. She said it's perfectly normal, as long as it's kind of clotting blood which is was. Bright red not so good but if still that colour in 48 hours to call them but they'd expect it to be older looking blood by then. Can be up to 10 days after birth passing clots apparently.
She checked her temperature, felt her tummy, wormed her and was generally happy with her colour so she wasn't worried she'd gone anemic or anything. She asked me about the kittens, did they sleep after a feed and seem content (getting enough milk) and i think they are so all is good. Rosie has had diarrhea since the day before the birth so she recommended I feed her Royal Canin kitten dried food and that should be gentle enough on the tummy. I bought some... gawd... it was nearly 18 quid but there you go! I think the hills science plan kitten is the same stuff so i can get that online for about 13 pounds I think.