which uni in uk are good at natural science?

You can refers to the Good University Guide:

http://www.timesonline.co.uk/tol/life_and_style/education/good_university_guide/?CMP=KNC-IX7429721604&HBX_OU=50&HBX_PK=university

or

http://www.thegooduniversityguide.org.uk/

or

http://education.guardian.co.uk/universityguide2006

For example,

Top 5 for BioSciences for last year were:

Oxford
Cambridge
York
Imperial College London
Warwick

Hope this helps.

可以找一些專為海外升學中心,我朋友開了一間,好專業她做了這一行10多年,可以免費打電話或上去她公司問一下情況,若有成績帶給她看更好,請電35496075學津海外升學中心.