Chilli,
How can one plan and execute an IFR trip without using any resourse which is provided even in a small way through the money from navigation charges. Perhaps you think that NATS provide the AIS service at no cost?
If this was ATC saying that they would only provide a LARS service to those who pay then the outcry would be deafening.
Perhaps Timothy should look at the many exemptions from paying nav charges available and make use of them!
regards,
DFC