100K!!
....Not in the UK on PAYE taxation!
A highly qualified Line supervisory Engineer with B1 & B2 and string of types might pull in around 70K with overtime working for a decent UK airline.
The normal salary (before OT) can be anything between 40 - 50K for a B1/B2 Line Eng with company approvals on around three types (depending on shift pay and other variable elements such as service increments etc)