New front pipe back in .. Just lambda to go. Can't get old one out even with a lambda socket. Will take it to local garage tomorrow as I don't have 22mm spanner and what I have got aren't tight fit so will burr edges if I try.
UPDATE: Had brain-wave ...
1) tried pipe-pliers and tap-spanner (the spring loaded type) ... neither worked
2) resorted to grinding down boss for sensor ... two outcomes: would either heat it up enough to break the grip or cut-down to threads where I could split it and remove sensor ...
2) worked and it came loose enough through heat to move with tap-spanner
So should be able to replace lambda at lunchtime and be back on road today.
UPDATE #2: Lambda replaced and all up and running again ..
Last edited by gazza82; 22-04-15 at 15:52.
Reason: Update: day 3!