I rang the premium line a 13p/minute and had to wait 10 minutes before they answered me. That apparently now to be the policy, bikes get charged 1/2 price of a car, which is a real rip off as they put the bikes in a dedicated area so they take up a heck of a lot less space than a car does.
What is really infuriating is you have to ring and book in advance (after waiting an indeterminate time at 13p/minute) or they charge £42/day for the same space.
A couple of the bikers forums say just turn up and park, as you can get past the barrier without having to have it opened. But iffy tho', I'd hate to be hit with a demand for 6 days unbooked parking.
Its a pity they've got so greedy. I might as well use the car, contribute to the traffic jams and take up a full space.