Balls! I know a local plumber, so I'll invite him round and see what he thinks. Lead runs upstairs and is under tiles now, so could be expensive to take them back up.
I think you can get plastic fittings to connect to the lead these days, certainly on waste it works, never had to do one on a pressured pipe. The biggest problem with lead is irregular size, biggest advantage is it's easy to shape.
Balls! I know a local plumber, so I'll invite him round and see what he thinks. Lead runs upstairs and is under tiles now, so could be expensive to take them back up.