Not sure now. The last time I went it cost me circa £50 - that was before the charges were supposed to go up
I used Samson (think they do all the GA/bus. jets etc) can be contacted on 0191 214 4111. They do discount the handling fee if you fill up with fuel. (They were very helpful and friendly)
I personally take the 2 hour drive now, I got sick of being ripped off and won't be going back
LF