|Pulmonaria or Lungwort|
|Lots of evergreen leaves - Pulmonaria in October|
|The buds start red, then the flowers turn purple and blue|
|The bumblebees soon start to arrive|
|Hairy-footed flower bee (Anthophora plumipes)|
Having searched round the internet I think these little guys are Anthophora Plumipes. The black ones are the females. The males are totally different, they are brown with the hairy feet. They appear towards the beginning of March and once the pulmonarias are exhausted they disappear (in May).
There are some great photos of the males here. http://www.insectpix.net/Hairy_footed_flower_bee.htm
...and some more info on them here http://www.wbrc.org.uk/WorcRecd/Issue%2022/anthophora_plumipes.htm