FXstreet.com (San Francisco) - The PMI services is scheduled to be published on Wednesday at 8:28 GMT by the Markit Economics. Market consensus is to see a decline to 53.0 in September from 53.7 in August. RBS expects a smaller dip in the PMI services to 53.2.

The UK PMI Services rose to its 5-month high to 53.7 in the past month, The Series average is 55.0 and pre-crisis average, 1996 to July 2007, is 56.3.

"On balance," comments the RBS analyst team, "there has probably been a slight underlying loss of momentum in the sector given the deterioration in the external environment."

"So we look for a small dip in the UK services PMI to 53.2 in September," RBS concluded.