Security services provider G4S has appointed Martin Taylor as its Group CIO.

The company has been through a particularly troubled period ever since its bungled London 2012 Olympics deal when it was unable to supply venues with security guards - blaming the issue on its rostering software. In October last year CEO Richard Morris resigned over the electronic tagging scandal, with G4S having to pay back the Ministry of Justice £24.1 million after it was discovered the company had been overcharging the government for monitoring electronics which had either not been fitted or after they had been removed.

Himanshu Raja, G4S CFO, said: "In November, we said that a key component of our strategy was our need to develop a global IT strategy to deliver cost leadership and to strengthen our resource and capability in the global functions.

"We are delighted that Martin is joining us in this new role to lead this change. He brings with him a wealth of relevant IT experience at a senior level."

Taylor is an experienced C-suite technology executive, and last year worked in an interim role for Barclaycard.

He was the Global CIO of EMI Music for seven years, the Group CIO of Cable & Wireless for three years, and has outsourcing experience working as a strategy advisor to the CEO for Tata Consultancy.