£51 for 5GB of data, and unlimited voice and text. That's currently $82.

Compare:

$110 for 4GB and unlimited voice and text on Verizon & ATT, which includes tethering.

$90 for T-mobile's cheapest "4G" data plan, which is "unlimited" data, but not LTE, and has no tethering.

$80 for Sprint's crappy non-LTE coverage, but only 450 minutes of voice, and capped tethering. Otherwise $110 for unlimited everything, and capped tethering.

Sorry, but this must be a different definition of "really expensive" than I was previously aware of (hanging preposition be damned).