I would still not advise porting your number to this company just yet. See the link below which refers to over 30 pages of user experiences (particularly the last half dozen pages. Seems the offer changes from week to week and that the allowances are fast diminishing, towards a rolling price type plan. The director has apparantly ,(dont quote me but there is company research listed and documented on the pages), wound up several companies in the last few years. Registered address may be a redirection type address. As I say, read it right through, especially the latter pages and judge for yourself. As always, caveat emptor.