I have. I was informed that TW had carried out an inspection and found the cause of the leak is on private property so repairs are the responsibility of the owner/s. Thames Water will carry out repair work if requested (currently for free) but it takes 2 months to get the paperwork/permissions completed and then only done in order of priority. I don't know what, if any, action the owner/s have taken though. It is showing as unresolved on the TW leak map so it is still on their radar....