Remove LO immediately and not pay 4 weeks notice?

[myfusion]

LO (22 months) attends a nursery that has a separate soft play area for use of the general public. Nursery now uses the soft play before it opens to the public and after it closes so I drop LO off and pick up from the soft play area.
I have had some misgivings about this arrangement because it always seems a bit chaotic and I've seen children climbing up the slide, going behind the counter that the soft play serve food and beverages from and this week saw a child running around with a toilet brush.
Yesterday when I collected LO I looked in the under 2's bit where he usually is and couldn't see him, all the staff were busy with parents picking up so I was looking around for him when another mum said she'd been watching him coming down the slide (a great big bumpy one) and she'd been concerned as he's only little and seemed totally out of control bumping of the sides and tumbling over towards the bottom.
I then spotted LO who had climbed to the top of the steps back up to the slide and at that precise moment lost his balance and tumbled, head over foot, all the way back to the bottom - probably a 10ft+ sloping height down (fortunately) rounded/padded steps so no injuries just shock and tears.
Not one member of staff had been supervising him and hadn't for some time by the sound of it, not one member of staff saw him fall and not one member of staff noticed him crying - he was still crying on the floor by the time I'd made my way over to him.
The upshot is I feel very strongly that I don't want to take him back there ever again, I don't trust them to care for him and keep him safe anymore. Who knows how many times this has happened previously, he is 22 months old and using a large play frame totally unsupervised.
If I remove him I will need to find alternative childcare asap, I can't afford to pay two providers at once though so, I either let him attend for the 4 week notice period which I am loathe to do, or I don't take him back (I will take annual leave until I find an alternative and settle him in but `i can't do this for 4 weeks) and don't pay the 4 weeks notice. Under the circumstances, would it be unreasonable to do this?

The safeguarding element of this arrangement alone would raise eyebrows at Ofsted. It sounds hideous.

I'm not a precious parent. My children are currently outside with no socks on playing with muddy water. I'd not let them go anywhere near that nursery though.

Thanks to everyone for their input. I shall follow the advice on here and put everything in writing and I will starting my search for alternative childcare come Monday.

No deposit was required when I enrolled him so I don't need to worry about it not being returned.

Are you in a town beginning with N in a county beginning with W? Your nursery description sounded familiar, I might be way off the mark but if you are then I can recommend DS's nursery to you via PM if it helps.

Shiny I wondered that as well, I also recognised the description.

No shiny I'm afraid not, personal recomendations are such a great help too so that's a shame.

Ah that's a shame. Really hope you find somewhere you like.

Titanium you must local too then?

I'm wondering if it's a town beginning with E..? If so it's near where I live and I'm not altogether surprised to see a post like this about that nursery/soft play.

I hope you can get it all sorted so he doesn't have to go back OP.

Thanks for confirming 'Loved One' for me.....now it all falls into place....

Little one Kitty, I thought...

Yes Kitty I'm mean little one, I wasn't sure what else to say as he isn't my DS.

The town begins with B

And does the establishment start with a p?

I know of a place like this in a town beginning with B. My children are beyond nursery now but I'd absolutely be removing my child with immediate effect.

No snow it doesn't.

It's a fairly new establishment and the care in nursery itself is very good, I think they need to rethink the drop off/pick up arrangements and I will be suggesting that to them.

I know of a place like this in a town beginning with b and if it's the same one, there are parts of the soft play area where there are big drops for a little one left unattended and the slide is quite a big one for soft play, and DS has bumped his head quite a few times because of the height of the landing mats.
I would not be happy about a small child being left to play in there to be honest, I have to watch 2 year old DS like a hawk.