In British organizations, the official channels — meetings, emails, reports — tell you the sanctioned version. The real information travels informally: over coffee, in the corridor, at the pub after work, in a quiet aside before a meeting starts.
If you rely only on formal communications, you will always be a step behind. The British professional who is well informed is the one who participates in social and informal settings where the real picture emerges.
This means that declining the pub invitation or skipping the coffee break has an information cost, not just a social one. When you do receive information informally, treat it carefully — you cannot cite it in formal settings or attribute it to the person who shared it. You are expected to act on it without revealing where it came from. Learning to operate in this dual system — formal and informal — is essential to being effective in a British workplace.