£15 minimum sounds steep for a job that requires no new parts and could take less than 5 minutes.
I defy anybody to remove a BB in 5 minutes, clocking the time properly from the time the previous job goes out of the door to the time the BB removal job does the same. Just go through all the stages of doing a job, from greeting the customer as he enters to waving goodbye to him on his way out, and you'll see that a job which needs 2 minutes of hands-on-tools action from a mechanic takes at least 15 minutes.
I defy anybody to remove a BB in 5 minutes, clocking the time properly from the time the previous job goes out of the door to the time the BB removal job does the same. Just go through all the stages of doing a job, from greeting the customer as he enters to waving goodbye to him on his way out, and you'll see that a job which needs 2 minutes of hands-on-tools action from a mechanic takes at least 15 minutes.