The Lenovo Z380 has an Intel Core i3-2xxx processor family which is better than most portable PCs of this age and spec. Most laptops that were released more than two years ago have an Intel Core i5 processor family. Across all medium processor core laptops that have been around for around the same time as the Z380 the worst processor family is AMD E and the best is Intel Core i7-3xxx.
It may also be worth considering one of the alternative notebook PCs that have an Intel Core i3-2xxx processor family currently available including cheaper portable PCs such as the X550CA, or the X75A (£1,998.60) both from Asus.
If the processor family of this notebook PC is too bad for you then you might want to look at the Toshiba C50-A (£384.25) (Intel Core i3-3xxx), or the Lenovo G500 (Intel Core i3-3xxx) which is also cheaper.