We don't fit new ones, we go to a local locksmith (guy is covered in tatoos, I wonder where he learnt about locks) and he fixes them for the equivalent of 10 quid and we've never had a client come back to complain.
If you want a laugh, read the 'official' way of getting the lock out. Includes removing the steering column, looks as if it would take all day. Sometimes it is best to ignore the LR manuals.