Suspended floor water ingress

[ChrisJLW]

I've been insulating the suspended floors in our house & noticed there's a lot of water coming in after heavy rain. I've had surface drains put in around the wall I thought it was coming through & the soakaway redone (it was full of roots).
Whist doing the hall I discovered a new water pipe had been brought through by hacking a hole in the subfloor. I reckon this is the source as the pic is after half an hour of heavy rain.
Question is, would you think sleeving the pipe and filling the hole with concrete would be a viable solution?
Any other thoughts very welcome.

 

[ChrisJLW]

As the rain continues I've found it coming through the mortar joint here too.