RBS, Natwest and Ulster customers facing problems using debit cards for payments online and in stores.
Brexit fall-out hits heavyweights Tesco and Unilever over supply deal.
Investors continue to buy cheap top flight stocks with strong foreign earnings.
However shares tumble at Royal Bank of Scotland after fresh controversy over its treatment of small businesses.
RBS is alleged to have manipulated small businesses into loan defaults in order to profit from their assets sale.
Traders sell airline and travel stocks after easyJet posts its full-year trading update.
State-backed lender is being sued for £4bn by investors, who claim they were misled in 2008.
RBS said this would not affect its core capital ratio as this was covered by existing provisions.
Concerns at Deutsche Bank continue to cast a shadow over the European banking sector.
Department of Justice's claims on the German lender lead to traders dumping banking stocks.
Investors fear central banks are running out of ways to kickstart the economy.
UK services data posts strongest month-on-month bounce in 20 years as Brexit recession fears fade.
Home builder Persimmon posts robust results despite fears that sales would slow after the Brexit vote.
Bank set to become the first UK lender to charge negative interest rates onto corporate customers.
A lacklustre week on the markets ends with William Hill rising as a three-way merger it rebuffed collapses.
Oil drives top flight stocks, while in the second tier William Hill rejects £3.2bn takeover offer.
FTSE 100 lender has shelved plans to make Williams & Glyn a standalone bank after lingering IT issues.
The London market falls after poor economic data and ahead of key BoE interest rate decision.
Others that performed poorly include Italy's UniCredit, the UK's Barclays and Germany's Deutsche Bank.
Move would represent first time negative interest rates are levied in UK.
Halifax gains 32,000 new customers while RBS and Lloyds both lose 11,000 account holders
Deal by Cambridge chipmaker ARM to Japanese rival Softbank for £24bn lifts the Footsie