A drip from the spout and a leak below the basin are different
When a closed tap continues dripping from the spout, worn internal seals, a valve seat or a cartridge may be involved. Water under the basin can instead come from a loose flexi connector, a deteriorated washer or a fitting joint. We check the supply side and the fixture rather than assuming a new mixer will fix every leak.
Single-lever mixers, two-handle taps and wall-mounted fittings use different operating mechanisms. Identifying the brand and model where possible helps us determine whether a compatible component can be fitted. Some older fittings have parts that are no longer practical to source, making full fixture replacement the more sensible option.

