If it’s corporate law, then yes! Work experience is really necessary. This is because corporate law is so competitive to get into.
If its not and you want to go into family law ect, I wouldn’t worry until second year. You can get work experience in a local law firm and just ask to shadow them- ask personally because they tend to ignore email.
In the meantime, have a look at law first year insight schemes on google- just type that in. It will produce results for loads of different commercial law work experience. Most of them closed on the 31st Jan although there are a few that close in mid Feb.
Away from firms offering law work experience, try looking into your local citizen advice bureau. They will train you up as a volunteer legal advisor to help people out in your local community. This will show that you have passion and motivation for the law early on in your academics.
To stress- law work experience is important. The field is becoming increasingly more competitive- work experience is the best way to make yourself stand out.
you won't sound silly asking your personal tutor or some other lecturer about work experience (except if you ask them to find it for you; that's your job). if you don't feel comfortable tho, get to know a second or third year law student. the ones that look like they never leave the library.
i know it's probably impossible to balance regular part-time work during the school year, but i would keep my feelers out to hopefully apply for something for the summer and maybe keep into fall for second year. do not wait to get your experience until after you graduate. a law degree alone or with the odd day of volunteering isn't going to stand you apart from the other thousands of grads that come out of UK law schools per year.
fyi CAB is a great idea as they always need volunteers, but for the record you will not trained to be a 'legal adviser'. no training at CAB will make you qualified to give legal advice.