If you have awful large tanks you probably don't carry spare diesel in cans as some of us do who are supposed to rely more on wind for movement. So it came as a bit of a shock when our local marina stated "there is a new dictat come down from HM R&C to the effect that we are not allowed to fill up cans with red diesel; even if we've just filled your boat's tanks we cannot fill your cans, it's the law! You can take your cans to the nearest filling station and fill them there." Pity was taken on our being struck dumb - so just this once and we puttered back in the dinghy firmly having been put in our place. Is this normal behaviour or have we just not been reading the right maggies to keep up to date?