Morgan Stanley Research previews the UK monthly print on Thursday.

"We expect flat activity, following what looked like a sharp monthly acceleration in February. 1Q GDP data have been coming in stronger than what we estimate is consistent with survey indicators for three years now, and the BoE has also noted that the ONS might be producing non-seasonally adjusted data. With such data quality issues, we accept that the band of uncertainty around the central forecast is very wide," MS notes.

"In any case, we think a flat March print, paired perhaps with mild downside adjustments to the February data, result in 1Q GDP growth of 0.6%Q. We think growth will be boosted by capex and government spending, with less of a contribution from private consumption. We expect GDP to flatline in 2Q and thereafter," MS adds.