Pros
Can have some good opportunities for development at a junior level, to a point, and if you're working for the right manager. Suits someone that is pragmatic and ready to roll their sleeves up. Good international travel Some senior leadership have some good intentions, but are weakened by an average middle management.
Cons
A legacy of final salary pension is seeing a glut of weak middle management that refuse to move on, but they have limited ambition and innovation. Many have climbed the ladder of a very operational career, and lack necessary strategic, leadership and at times simple management skills that their level should have. This weakens the overall business. This is also causing a development blockage for more junior, but talented staff to progress. This is because the positions don't open up, but also that this middle management feels easily threatened by talent due to their own inadequacies. That's seeing talented junior staff with no options - they either leave, or stick around with no progression and become similarly average as a result. Too many staff are also there because it's 'comfortable' and don't wish to disrupt that. That just promotes mediocracy. Pay is relatively low (for London). Very little transparency on pay rises, no pay/role bandings, so it feels luck of the draw. Quality data and insight is non existent. Digital innovation is so 10 years ago. Very old fashioned culture. Incredibly hierarchical (and disempowering) corporate (especially up to RELX level) but in other ways operates like an ill-equipped medium size business (eg HR, career development).