Good idea! Go for it !
I signed up for an MA Social Work in 2019 aged 44, I completed my course this year. Am having some time off before applying for jobs etc now but will be starting pobably in January. My background was in the social work kind of area but in a polcy role so it was relevant for the course.
I had been toying with it for a while but decided to apply in the August before the course started in Spetember and was admitted after a phone interview, most of the others had applied earlier but the admissions person said that they always had 3 or 4 that didnt turm up so there was usually vacancies all the way up to the course start date.
Funding is available - I got a payment of £4,000 a year from NHS funding (its available to all on accredited courses I think) and could have applied for a contribution to living costs + childcare costs but its means tested so a combination of savings and a partner working meant it wasnt worth applying. Realistically you will have to cover lving costs as it is fairly full on and so you cant really do a regular part time job alongside the studying, especially during the placements which effectively are full time employment.
On my course fellow students ranged from 21/22 up to late 40s and invetiably I guess there was a split between the very young (many of whom had started the MA directly after graduating) and those of us who were a bit older but we as oldies could contribute more to the seminars/discussions etc. It was quite scary to realise how young some were - eg when talking about events such as the 1997 election or the millennium to be told "oh I was only 2 then so dont remember it". This past academic year we havent been in to university at all so its felt a bit disjointed but from September I think they are going back.
The placements for me were a bit frustrating as I was doing more basic work than I was used to prior but taking it in the spirit of a new experience it was quite satisfying to reflect on (you do a lot of relfcting on practice in social work!), my placements also were severely lessened by the Covid situation - in my 100 day placement for example I didnt meet in person my fellow team members once and really missed the general office life and discussions that form a key part of practice learning. It was tricky also to fit in the placement around home schooling but we managed it. Hopefully university/placements will be back to normal from this years students.
As you are probably aware once social workers complete the course we have a probationary asye year in employment which sounds good as it will ease into the job, a friend who did the course five years ago said that it felt a bit over cauitious and hand holding for her but was happy to ensure she was doing everything correctly.
So go for it - get your application in soon and you'll be a newly qualified social worker in 2023!