What Is This Houseplant?

Any help please - this plant has spear-like deep red coloured 'flowers' on long pencil stalks, green at the bottom and becoming red just below the 'flower' and loads of long spindly leaves growing out from the bottom of the stem.

I put the term 'flower' in quote marks because I'd hesitate to call it that as they look more like spear tips (May/June in UK), but maybe they'll open out nearer mid-summer. Currently they are each about 4 inches long and half to threequarters inch diameter. It came to us in a pot with six flowers, at first glance it appeared to be one plant, but I think it's actually six that have been planted close together.
All suggestions greatfully received. It's a 'leaving work' present to my wife so we're keen to know how best to keep it alive - if not flourishing!
Thanks.