Plumber Required – Bathroom Leak & Shower Mixer Issue Looking for an experienced plumber to investigate and fix two issues: 1. Leak underneath bathtub: Small leak underneath the bath, with water marks appearing on the kitchen ceiling below. Need to identify the source and repair the leak. 2. Shower hot water issue: Shower isn’t producing hot water, but the bathroom tap runs hot. Need the shower mixer/thermostatic valve inspected and repaired or replaced if necessary.