once we have established the root cause of the issue we will be in a position to offer a quote to resolve. If you know what the cause is, the please share a video or photos with us explaining the same and we should be able to offer a quote for free. Alternatively if you do not we can arrange one of our plumbers to investigate on site – with a leak trace and repair visit – see here –  https://serviceteam.co.uk/sourcing-and-fixing-water-leaks-london/