Litebulbs
Try
http://www.raes.org.uk/ and then follow "membership joining and upgrading" then to "membership-individuals" and at the bottom of this page "CLICK HERE" and then select "GI Eng" this leaflet will give you all the information that you need to make a decision on your own circumstances regarding an application to join.
If you go to the C Eng route I think that the TRO costs are pretty stiff, I think that its £500 ish at the moment, and annual renewals are
£177 for MRAes plus £26 for Engineering Council fees.
The applications and interviews are not meant to be daunting, I help out as an assessor for C Eng and I Eng applications, and have recieved training on exactly how assessors should do the job, please don't be put off by horror stories about the process. the RAeS will also provide a mentor to help and advise at all steps in the process.
I think that any B1/B2/C licensed guy with a bit of experience can register as I Eng without any problems, and should be able to complete the TRO route for C Eng with some application
Best regards,
om15