Market overview: Shares edged higher ahead of US non-farms

1630:Close Shares ended the day slightly higher following a relatively upbeat ECB press conference and with investors increasingly anticipating some sort of deal between Greece and its creditors. The messiest scenario, on the other hand, envisaged a referendum in Greece or new elections to break a possible political impasse. Morrison was among the best performers following the latest grocery market share figures from Kantar. FTSE 100 up 22.19 points to 6,950.46.

1511: "The May reading for the non-manufacturing ISM brings the quarter-to-date average to 56.75, versus 56.7 in Q1. As such, we are inclined to look through the larger-than-expected decline in May and we continue to view the service sector as on solid footing in Q2," analysts at Barclays said in reaction to the ISM data.

1500: The ISM non-manufacturing sector purchasing managers' index retreated to a reading of 55.7 from 57.8 in the prior month (consensus: 57), its lowest since April 2014. A gauge of new orders slipped to 57.9 from 59.2 and another tracking employment to 55.3 from 56.7.

1315: The US labour market performed just as expected in May, according to a widely followed survey. America’s private sector generated 201,000 jobs in May, a smidgen above the 200,000 estimated by economists, payroll consultant ADP said.

1245: ECB keeps main policy rates unchanged. The main refinancing rate was kept at 0.05%, the marginal lending rate at 0.30% and the deposit rate at -0.20%. The focus will now shift to Draghi's press conference, with investors expected to focus on any remarks pertaining to Greece. The ECB president is expected to reiterate he will carry out the central bank's sovereign bond purchase programme in full.

0930: UK stocks are flat-lining ahead of this afternoon’s ECB press conference and a raft of US economic data. Investors are expected to keep a particularly close eye on the latest ISM services sector purchasing managers’ index. That part of the economy is responsible for both the majority of hiring as well as investment. Britain’s services sector slowed in May to a reading of 56.5 from 59.5 in the month before (consensus: 59.2). Critically, Greece and its creditors staked out their respective positions ahead of a meeting scheduled for Wednesday evening between the country’s prime minister and the head of the European Commission. FTSE 100 down 0.48 points to 6,927.79.