The true native bluebell is a scented deep blue/purple flower, which hangs down from the arching stem. This common favourite ought not be confused with the foreign species of bluebells.
There are still woodland areas where the plants may be found in quantity, but there have been significant thefts of bluebell bulbs. The introduction of the non-native muntjac deer is causing many problems as these animals are partial to eating bluebell leaves, eating them to the ground in some cases, and trampling them. The rapid spread of foreign bluebells, including the Spanish bluebell (Hyacinthoides hispanica) and the hybird Hyacinthoides x massartiana, is also a problem as they are more vigorous than the native species with which they also readily hybridise.
Related questions & advice
You don't need a huge garden to attract wildife, any open area can be managed for the benefit of wildlife. If you have a patio area why not plant some low growing plants in the cracks and gaps. By doing this you will be providing a valuable habitat and food for a variety of small animals. Bellflower, cranesbill, herb robert, purple saxifrage and thrift are just a few plants that will happily grow in such an environment.