Should you always use a solicitor?
A legally valid will does not require a solicitor to draft or witness it.
You can write your own at any time but it can only have power in law if it is drafted and signed correctly and is up to date. There are books available to show you how to create a Will and some popular online Will writing services such as Ten Minute Will which have received positive reviews from customers.
However, proceeding without a solicitor is really only viable if your affairs are straightforward and even then it is adviseable to have a professional check your Last Will and Testament for any mistakes.
If cost is deterring you from using a Solicitor, there are some cheaper online services that employ Solicitors to check all Wills produced such as My Lawyer who even offer telephone advice from legal professionals as part of the service.