On 26 Apr, 17:45, "Alan" wrote:

If you restricted the bath tap a bit (try with it half open) you'd probably
get a bit of flow to the shower - but unlikely enough to mix with cold and
give a decent shower performace.


Thanks for the other info. Might it help if we ran a the hot from the
boiler, via the kitchen sink (never in use at the same time as the
bath &/or shower) to the shower and then the bath? The old spur would
be used for the cloakroom only and capped off there.

The shower would be nearer the boiler (in pipe terms) than the bath
then. Or doesn't pressure work that way?