It would certainly help, but the water ingress comes from all directions. Around 6 houses down to the right is where it starts and all that waters flows through each garden to the end outlet - the road - to the left of our property. There is also a significant element that rises from the ground itself.
If I build a block wall at the rear and to the neighbour on the right, most of the water would be stopped, but it would then almost certainly flood the neighbours actual house.
In the absence of better drainage on the public field, I am happy to let the water flow through our property, but I need a permeable barrier or fence line on the left hand side.