Welcome Home?

At this busy junction leading onto Walney Island it is a bit of a local tradition to hang homemade banners greeting Walney residents as they arrive onto the Island. Now the usual thing we see is "happy birthday" or congratulations on a couples engagement or wedding anniversary. But the huge banner that someone had taken quite a lot of time and trouble to erect over the weekend has me baffled. It reads "welcome home Bobby K RN 2 yrs GBH.  What the heck is that all about? Are they welcoming home somebody called Bobby who has been in prison for two years for grievous bodily harm?  Or has it some other more cryptic meaning, none of my passengers seemed to know anything of it but most seemed to go along with the Bobby K getting out of prison scenario. Who knows the truth behind it eh!