By Devik Jain and Amal S (Reuters) – UK’s FTSE 100 fell for a sixth straight session on Tuesday, as investors raised bets on how high central banks would lift interest rates to tackle inflation. After rising as much as 0.9%, the FTSE 100 erased early gains to end 0.3% lower, with spirit market Diageo and GSK among top drags. The domestically focussed mid-cap FTSE 250 index edged 0.6% lower. Global stock markets have been rattled as investors price in aggressive central bank policy moves to quell inflation against a backdrop of the Ukraine crisis, concerned that this could lead to a global econ…