We covered Lumia 920 being available on Three UK, but missed that Lumia 620 has also arrived at Three. There is no “upfront cost” for on-contract unlimited data plans, which means it is available from Free on-contract !! The Pay As You Go price is £169.99.
Lumia 620 is listed as “Pay As You Go” smartphone at Phones4u. Good part os the availability in Black, White and Magenta, bad part is the illogical pricing. It is priced £299.95 which hardly makes sense.