Union oval door lock

U last week I was called to a property in Chadwell heath who had a very old aluminium door and the latch wasn’t retracting when the handle was depressed which meant she would get locked out.i measured the lock and noticed tbe handles were not in very good condition .I made some enquiries but the oval cylinder handles are no longer available so she would have to have a new lock case,euro cylinder and new handles. I spoke to the customer and she decided to change the whole lot.I ordered the parts they arrived today and was fitted today so the custoner can you her back door without being locked out.