I work with quite a few ex-BBC developers. It seems to be more of a labor of love. They universally have said that it's poorly paid, relatively.
When I worked for the BBC (2002) I was on £42k a year, official title was DBA, though did more non DBA work and was at a level in which I could tell the top people my views and what needed to be done and they listened.
Thing is in tech, it's not what you're paid per year, it's how many hours you work for that pay a year. Could have a £50k job and work 9-5 or a £50k job and end up cutting 80 hours weeks all the time. Details like that are never reflected in the salary.
Since leaving, a lot of the work I have done has been boring and predetermined.
I might add - the pay has got much worse since you were there. The collective pay increase was 1% most years, which also applied to the banding so would have affected new hires as well. Since 2011, the pension has been no better than in any other organisation.