My WH Smith in Hertfordshire always has it. Just a shame there isn't more to read in it.
Motor Boats Monthly always has plenty of content, even if a lot of it is dull in terms of being primarily aimed at displacement dudes (Know your ducks, the joy of rope cutters, etc).
SB&R just fills up space with pictures of Sarah Donahue's norks (Not that there's anything wrong with that, just be nice if I got more than 10 minutes reading for my three and a half quid)
In their favour, they did have a good centrefold last month!
Boat: (Noun) - A hole in the water, lined with fibreglass, into which you pour money.