What a load of bollox.....no offence. You can have your bike serviced anywhere under the warranty as long as BMW parts are used and they are VAT registered. The benefit of a good indie is you know the job will be done properly and the little things get checked and looked at.
Give Gary a call and
www.adventurebikewarehouse.co.uk over in Manchester and get your bike serviced properly and also get some excellent banter if you fail to take biscuits. The money saved will buy you a few tanks of fuel and a few bacon and egg butties.