Barclays chief executive Antony Jenkins is to reveal his plans for repairing the bank's battered reputation in the wake of a string of damaging scandals.

Bonuses and culture will again be in the spotlight when the bank delivers its annual results and the long-awaited results of the strategic review.

According to reports, about 10% of the investment banking division's 23,000 staff will be shown the door, while Mr Jenkins will close the Structured Capital Markets division, which gained notoriety for its advice to multinational companies on reducing their tax bills.

The moves are part of Mr Jenkins' drive to "shred" the legacy of former boss Bob Diamond, who quit after the bank's £290 million Libor rigging settlement last year. The review has broken the bank down into 75 business units and examined both their potential to generate sustainable profit and their ability to inflict reputational damage.

Writing in the Sunday Telegraph, Mr Jenkins said: "Tuesday is an important day in the 320-year history of Barclays. Combined with announcements on purpose and values, our strategy review will set out a fundamentally new approach for a new era. It will provide a road map for long-term success and I am confident that, given time, it will show that the understandable scepticism about our commitment to real change was misplaced."

He wants the business to combine its "excellent" retail banking operations with a "high-quality" investment bank, including a strong international presence in growing markets.

But he is expected to say: "There are some areas that relied on sophisticated and complex structures, where transactions were carried out with the primary objective of accessing the tax benefits. Although this was legal, going forward such activity is incompatible with our purpose. We will not engage in it again."

The Libor-rigging scandal and provisions to cover mis-selling claims for payment protection insurance and interest rate swap products mean bottom-line pre-tax profits are expected to slump from £5.9 billion in 2011 to below £1 billion. Stripping out one-off factors, analysts expect profits of £7.18 billion for 2012, up 28% on the £5.59 billion reported in 2011, with more than half of this expected to come from its investment banking division.

Mr Jenkins has already waived his bonus for 2012, saying it was "only right that I bear an appropriate degree of accountability" after a "very difficult" year for the group.

But Barclays is set to reveal how much its wider bonus pool is for 2012 and what it will pay staff in its investment banking arm, around 9,000 of whom are based in London. The pot is reportedly set to be between £1.5 billion and £2 billion, compared with the £2.2 billion set aside for 2011, which included £1.5 billion for Barclays Capital employees.