Weir Group blames orders from the oil and gas market for 23% drop
WPP suffer sharpe drop due to client loses in North America
Shares will be hit acorss the sector as building materials rise in cost
Barclays profits fall by 10% in the first quarter as investment bank struggles with tough markets.
Shares in G4S jump as much as 30% after Canadian rival considers takeover.
The wholesale division of Conviviality, which collapsed last week, is being bought by C&C in a pre-pack administration.