Answer:

thatcher

AnswerCrossword Clue
THATCHERPrime Minister before Major
THATCHERMaker of roof covers.
THATCHERTom Sawyer's Becky.
THATCHERMargaret of 10 Downing St.
THATCHERP.M. Margaret
THATCHERMajor predecessor
THATCHERBritish prime minister before Major