Right now I don't think is a good time, unless you can get an in-house role. In-house means working for a company with a legal department.
We had three major firms merge very recently, tons of secs in the market. Most of whom haven't been trained properly in recent years. One other firm has just closed it's doors for good, so even more. The big names have the best benefits, but not necessarily the best working culture. Medium sized firms, have opportunities to do more than just secretarial, but you never know what kind of lawyer you end up with. You only have to do the hours that you want to do over the time.
I see some people arrive at 9 leave at 5 and that's okay, I see other people come in at 8, still working at 6 and no even handing in an overtime sheet. In fact many lawfirms are cutting back on overtime. They definitely don't want to pay temps for it. The bigger firms also have evening/night staff. Such as White & Case, Hogan Lovells.
Some want you to do more and be enthusiastic and give you opportunities, others want you to be sitting outside their office just incase.
The worst thing is working with lazy secretaries, if you are not lazy. You get resentful. Oh yes, and lets not forget the Team Leaders, some are good and let you get on with it. Some are threatened by you if you have decent experience, but in another field (so an Executive Assistant in an accountancy firm is not stupid and the crossover should be fine).
I could talk about this topic all day. Been doing it for 20+ years seen all the changes, loved it in the beginning in Civil Litigation, moved to Commercial Litigation then Corporate. Did a stint in property right at the start of my career and never looked back. The 90s were great for Legal Secs and PAs, not so much now, but if you can find the right people to work with, in the right conditions, then you should enjoy it.
Working outside London doesn't really make sense, not enough money to make it worthwhile doing the course. If you are in insurance or Accounts, it's an easy transfer.
Buck3t