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From about this time yearly in England until about after the last cricket test match, the lark are in England.
Here are two different ones singing from a great website; note, there are many different types of larks:
http://ibc.lynxeds.com/video/woodlark-lullula-arborea/singing-male
http://ibc.lynxeds.com/video/eurasian-skylark-alauda-arvensis/male-singing-endlessly-horizontal-wire-vineyard
and here is one trying to stay warm...
http://ibc.lynxeds.com/video/eurasian-skylark-alauda-arvensis/individual-sheltering-strong-wind-foraging-ground
and one feeding babies...
http://ibc.lynxeds.com/photo/eurasian-skylark-alauda-arvensis/adult-food-scanned-slide
and here is an entire site on these wonderful birds....
http://www.rspb.org.uk/wildlife/birdguide/name/s/skylark/index.aspx