Bees are everywhere in Canary Wharf.

There is a colony of 40,000 across two hives on top of KPMG's Canary Wharf tower, a troop that visit the roof garden at Morgan Stanley's offices and a few drop in to Jubilee Gardens and Westferry Gardens.

This is all down to initiatives set up through Urban Bees - an organisation which is working on raising awareness of what people living in the city can do to help the declining bee population.

Since 2007 the amount of bees in the UK has decreased by a third, due to farming methods, a lack of bee-friendly plants and global warming.

Tips for solitary bees: Make a bee hotel to provide them shelter for laying their eggs

But there is plenty we can do to help.

Jubilee Gardens, Westferry Gardens and Morgan Stanley's rooftop garden are all places the bees like to visit because the type of plants they like have been planted there.

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The hives at KPMG are also a useful tool in teaching the staff there about these animals - and in turn, the envirnoment.

Helping the bees: KPMG staff at the Honey Harvest on the Canary Wharf office rooftop

But Urban Bees' co-founder Alison Benjamin says the best thing for anyone looking to help these stripy flyers is to plant more flowering plants and trees.

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Here are Urban Bees' top tips for helping bees

  1. Plant bee-friendly flowers in your garden, roof terrace of window box. Find out which ones are best here. All bees like flowering herbs, such as rosemary, thyme, mint and wild marjoram.

  2. Try to plant flowers in clumps in a sunny spot as bees tend to visit one type of flower per foraging journey.

  3. Bees forage from spring to autumn when it is warm and dry, but some bumblebees fly when it is colder, so they need early and late flowering flowers and shrubs. So plant bulbs such as winter aconite and crocuses for February and shrubs like Mahonia aquifolium or winter honeysuckle. If you want to attract the Hairy Footed Flower Bee into your garden just plants lots of Lungwort (Pulmonaria) which they can’t resist in March. The best late forage is Ivy, Japanese anemone and sedum.

  4. Don’t mow your lawn so often, to allow dandelions and clovers to flower and provide important food for bees in spring and early summer.

  5. Don’t use pesticides and weed killers in the garden as these can be toxic to bees.

  6. Ask councils, land owners and managers to plant more trees that are good for bees in parks and streets as trees provide an abundance of food for hungry bees food. Lime trees provide London honeybees with their biggest source of nectar to turn into honey.

  7. Honeybees live in hives and are looked after by beekeepers, but other bees need places to live, so leave a pile of leaves in your garden where bumblebees could nest or put an upturned flower pot in a quiet spot, cover the drainage hole, run a hose pipe underground into the pot and leave the entrance prominent at ground level for the queen bumble bee to find. Make bee hotels from hollow bamboo stems and attach to a south facing wall for solitary bees to check in and lay their eggs.

  8. Provide some water for bees to drink, even a saucer will do, but add some stones for the bees to stand on as they can’t swim.