FIS
Its not a case of someone being in a good mood ,it is a case of workload.You cannot expect to route through Manchs center line if we have a constant stream of inbounds. Continous tfc info would have to be given to the arrivals on you and to you on the arrivals, whilst you are transitting through the centre line
Dont forget , ask for a direct routing ,we can refuse, but most of the time you get what you ask for.