There are three possible CV layouts to choose from: chronological, functional or combination.
In the UK, chronological is by far the most common. With this type of layout, you give your work history in reverse chronological order (i.e. most recent first), followed by your qualifications also in reverse chronological order.
By contrast, a functional CV lists all the skills that are required by the role and details underneath how you have acquired and/or used those skills. The detail may result from paid work experience, voluntary work experience, freelance work, studies or something else entirely. The focus is on proving you have the necessary skills.
A combination CV uses a bit of both of the above approaches. It might feature a substantial skills section but also include a chronological work history.
For UK candidates, we'd recommend you use either chronological or combination. Functional CVs are less familiar in the UK.