April 29 (Reuters) - British shares drifted lower on

Wednesday as investors parsed a mixed bag of corporate earnings,

with attention turning towards central bank decisions on both

sides of the Atlantic.

The blue-chip FTSE 100 index fell 1.2%, slipping for

the seventh time in eight sessions and closing at its lowest in

a month. The midcap FTSE 250 eased 1%.

* AstraZeneca ( AZN ) and GSK fell 1.5% and 5.4%,

respectively, after both drugmakers stuck to their full-year

forecasts despite posting better-than-expected quarterly profit.

* Lloyds Banking Group ( LYG ) dipped 1.5% despite

reporting a better-than-expected rise in first-quarter profit.

* Earnings season is in full swing with investors cautious

of any impact stemming from the Iran war as surging oil prices

continued to pressure markets.

* Efforts to end the Iran war were at an impasse with U.S.

President Donald Trump unhappy with the latest proposal from

Tehran as he wants nuclear issues dealt with from the outset.

* The Federal Reserve was meeting later on Wednesday,

followed by results from megacaps Alphabet, Microsoft ( MSFT )

, Meta and Amazon ( AMZN ), which could set the

tone for markets globally.

* With geopolitical uncertainty still high, the BoE was set

to keep interest rates unchanged on Thursday.

* Tentative hopes of a resolution to the Iran war have

helped steady the FTSE 100, putting it on track for a marginal

April gain after the conflict drove its worst monthly slump in

six years.

* Among other moves, DCC surged 9.3% after the sales

and marketing services provider said it was reviewing a cash

takeover proposal from a consortium comprising U.S. investment

firms Energy Capital Partners and KKR.

* Money manager St. James's Place fell 6% after

reporting first-quarter net inflows of 1.53 billion pounds

($2.07 billion), down from 1.69 billion pounds ($2.28 billion) a

year earlier.

($1 = 0.7407 pounds)