The FTSE 100 experienced modest gains on Tuesday, marking its fourth consecutive day of upward movement as investors concentrated on corporate earnings reports. Shares of Greggs surged by more than 8%, following the bakery chain's announcement of improved trading conditions and increased revenue growth. In the first 20 weeks of the year, like-for-like sales increased by 2.9%, while overall sales rose by 7.4%. Vodafone shares displayed volatility as the telecommunications giant reported a robust 5.4% growth in Q4 service revenue on an organic basis, surpassing the anticipated 4.2% growth. Additionally, speculation over mergers and acquisitions re-emerged within the insurance sector, with news suggesting that life insurer and pension consolidator Chesnara is contemplating a bid for HSBC’s UK life insurance arm.