- BoE expected to hike by 50 bps or 75 bps
- Fashion retailer JD Sports cautious on trading after profit fall
- FTSE 100 down 0.4%, FTSE 250 off 1.0%
Sept 22 (Reuters) - UK shares slipped on Thursday as investors braced for a likely second outsized interest rate increase by the Bank of England following the U.S. Federal Reserve's third straight 75-basis-point rate hike the previous day.
The blue-chip FTSE 100 index fell 0.4% and the domestically focussed mid-cap index declined 1.0%, tracking weakness in European and Asian peers.
UK's central bank looks set to raise rates by at least half a percentage point at 1100 GMT in a bid to tame near 40-year high inflation. The announcement had been delayed by a week due to a national mourning following Queen Elizabeth's death.
The BoE is expected to raise rates to 2.25% from 1.75%, according to economists polled by Reuters, while financial markets estimate a 92.4% chance of a bigger move to 2.5%.
Banks and insurers fell 0.6% and 0.4%, respectively, weighing on the benchmark FTSE 100 index.
"If we get a 50bps hike today, then the BoE will be in the position of paying more in interest costs to the reserves created under its (quantitative easing) programme than it will be earning from holding the bonds itself," said Stuart Cole, head macro economist at Equiti Capital.
"We have already heard that the government is looking at a mechanism to avoid this, that is effectively a tax on the banking sector. So going forward, as the BoE continues to hike rates, it could be negative for bank stocks."
Investor confidence in British assets sits on the edge of a precipice ahead of new finance minister Kwasi Kwarteng's fiscal update on Friday, according to a Reuters poll earlier this week.
JD Sports fell 4.3% after UK's biggest sportswear retailer reported lower profit for the first half and said it would remain cautious about trading through the rest of the year as sky-high inflation crimps consumer spending.
Real estate stocks dropped 2.3%.
Meanwhile, the sterling pared early losses after briefly hitting a new 37-year low against a firm dollar.
Reporting by Bansari Mayur Kamdar in Bengaluru; editing by Uttaresh.V and Sriraj Kalluvila