UPDATE 2-FTSE 100 falls on energy losses; AstraZeneca supported by vaccine hopes

* AstraZeneca marks strongest close ever
* Midcaps index supported by media house Future
* UK homebuilders supported by report of mini housing boom
* BHP Group flat ahead of quarterly production data

(Updates to close)
By Ambar Warrick and Sagarika Jaisinghani
July 20 (Reuters) - The British blue-chip index ended down
on Monday with energy stocks tracking a decline in oil prices,
while AstraZeneca marked its strongest close ever on optimism
over its COVID-19 vaccine.
The commodity-heavy FTSE 100 index .FTSE was down 0.5% on
the day, with BP Plc BP.L and Royal Dutch Shell Plc RDSa.L
among the biggest drags as oil prices fell in anticipation of
weaker demand. O/R
Heavyweight drugmaker AstraZeneca AZN.L helped cap some
losses, rising 1.5% after data showed its experimental COVID-19
vaccine was safe and produced an immune response in early-stage
clinical trials in healthy volunteers. Still, the stock ended largely off an intra-day record high
hit in anticipation of its announcement.
The mid-cap FTSE 250 .FTMC closed 0.2% higher, propped up
by Future PLC FUTR.L . The media firm surged more than 15%
after it forecast annual performance to be at the top end of
market expectations.
"Following the (steep rise) from March lows, markets need
another dose of positive news to keep the rally going, but given
the many uncertainties ahead, the risks seem tilted to the
downside," said Hussein Sayed, market strategist at FXTM.
The FTSE 100 has bounced about 27% following a
coronavirus-driven crash in March, but the pace of gains has
slowed since June amid fears of a slower-than-expected global
economic recovery.
A recent survey showed that nearly half of Britain's biggest
companies think they will take until the second half of 2021
before businesses recover from the pandemic. Among individual movers for the day, Marks and Spencer
MKS.L , one of Britain's best known high-street names, fell
slightly on a report that it planned to announce hundreds of job
cuts in the coming week. BHP Group BHPB.L , the world's largest miner by market
capitalization, ended flat ahead of its quarterly production
results.
Homebuilders .FTNMX3720 gained about 0.8% as a report said
a mini housing market boom was gathering pace after a tax cut by
finance minister Rishi Sunak.