Shower head suitable for low pressure

[MrsSteveMcDonald]

We bought our house 11 years ago and recently replaced the shower head as it split. The new one is terrible, if you turn it upside down, water barely dribbles out as the pressure isn't there.

We have an immersion in the loft and the shower takes the hot water from there, it isn't an electric shower.

Downstairs our water pressure seems pretty normal but upstairs the cold water isn't great and the cold tap splutters and makes a grinding noise. If you flush the upstairs toilet when water is being used elsewhere then it also makes that noise and you have to reduce the flow of the fill to stop it by holding in the button with the ballcock.

Is there any shower head that would be more suitable for our set up? The one we bought was just one from B&Q but I'd prefer one that works like the old one. There wasn't any name on it so I can't look it up to try and get an equivalent.

Aqualisa has some good shower heads for low pressure

have a look at your loft water tank. Does it have a close-fitting plastic lid to keep dirt, spiders and pigeons out? How high is the water level?

Is there anything blocking the pipe orifice at the bottom? There should be two, one for the hot-water cylinder and one for the cold water taps. The tank needs to be higher than the hot water cylinder, and may be on a raised wooden platform.