I currently have a gainsbrough 10.8kw electric shower, but I have
always been unhappy about its outflow. Is there a way to boost the
cold water pressure to the shower or perhaps there is an off the shelf
electric " boosted " shower out there.

I'd love to have a power shower, but the family gets too many showers
to be practical to run one.

Any help or suggestions gratefully received..

... Tony