The British have an interesting mix of communication styles encompassing both understatement and direct communication. Most British are masters of understatement and do not use effusive language. If anything, they have a marked tendency to use ‘qualifiers’ such as 'perhaps', ‘possibly’ or 'it could be'.
When communicating with people they see as equal to themselves in rank or class, the British are direct, but modest. If communicating with someone they know well, their style may be more informal, although they will still be reserved.