aply schengen visa from uk

dear sir/madam
i wanted to know if i can apply a tourist schengen visa for france if i have a tourist visa in UK? - i am actually on holidays in london and i would like to spend a week i paris

thanks

Yes, you can apply at the French consulate in London. You will have to explain why you did not apply for a visa in your country of residence and expect some delay for the London consulate to contact the French consulate in your country of residence.