Bee keeping...

Starving bees is normally a sign that the beekeeper has over-harvested from the hive's honey store. Sometimes it's a sign that the colony was too weak to stop wasps or rival honey bees from stealing their stores. It's not an endemic problem.

UK beekeeping does face some challenges at the moment but they're mostly about disease (European Foul Brood, American Foul Brood, Chronic Bee Paralysis Virus). When a novice beekeeper finds a colony has died, they usually also find that the stores are empty and some people mistakenly attributed the cause to starvation for that reason. But a weak or dead colony can't defend the stores, which are quickly robbed. Believe me, the whole insect world around a honey bee colony knows the honey and beeswax are there and would be robbing it in a second if the bees weren't defending it. Sometimes weak colonies are robbed of their stores (by wasps or other honey bees, usually) and starve as a result.

Some parts of the UK have an overabundance of beekeepers but that usually prevents colonies from growing and thriving, rather than starving healthy colonies.