The servicing cost above are those recommended by BMW UK, individual Dealers can however adhere to the recommendation or go their own way, hence the discrepancy in pricing.
I had an Inspection I carried out earlier this week at Williams Manchester
(for convenience) now put away for the winter, will surface again in April.
If your laying it up, periodically
(at least once a month) run the engine to keep the vital juices flowing, another tip; chock the wheels don't use the handbrake and you should be good to go come the Spring.