You mean McNicholas?
if your changing from being a full time electrician to working in the cable service industry then you may find the wages are slightly lower, but the job is what you make of it. People complain about any job... its human nature. If its the type of work you enjoy then im sure it will be a good job.
And yes, you can make a career of it, with the way VM are expanding there will be opportunities in future to progress in the company, you will just need to work at it.
All comments are my own opinion and not a direct expression of Virgin Media.