MPs are to bust the Government's public sector pay cap again with a 1.3% rise.

Politicians are to get the £962 increase from April - just nine months after they received a backdated boost to £74,000.

The Independent Parliamentary Standards Authority said: "This is in line with our determination on MPs' pay, published in July 2015, where we committed to adjusting MPs' pay for the rest of this Parliament at the same rate as changes in public sector earnings published by the Office of National Statistics.

"The ONS index takes account of promotions and bonuses which may explain why the figure is higher than the one per cent wider public sector pay policy."

Ipsa has come in for widespread criticism over its handling of MPs' pay. The organisation introduced an initial 10% rise because it said salaries for MPs had dropped behind the rest of the public sector.

Under the new package that came into force last year, pay is uprated in line with ONS public sector weekly earnings.

But the move is likely to anger public sector workers, whose pay increases are being capped by the government at 1% until the end of the decade.

Unison General Secretary Dave Prentis said: "Employees in schools, councils and hospitals will wonder why the Government is insisting on restricting their pay, when elsewhere in the public sector MPs are getting significantly more.

"Just a few months ago Westminster politicians received a whopping 10% wage boost.

 "Nurses, teaching assistants and librarians are valiantly keeping our public services going while funding is slashed, and understandably feel hugely taken for granted.

"The Chancellor should use next month's budget to announce a decent pay rise for them too."

Dia Chakravarty, political director at the TaxPayers' Alliance, said: "Public sector workers as well as taxpayers will find it difficult to understand why MPs' pay rise goes above the 1% cap put in place. What is the point of the cap if it's not imposed?"