http://www.legislation.gov.uk/uksi/2013/2909/pdfs/uksi_20132909_en.pdf bit of new legislation worth reading and getting to grips with. would appear to remove the need to 're SORN' annually, once done initially , if keeping off road continuously for more than12 months., if I've read it right. (IANAL).
Yes, I get a SORN letter from the DVLA yearly. Its more of a tax reminder but can be used to SORN your bike online. Handy and quick.