No you haven't. But that total of 2x2.99KW exceeds the design spec as laid out in BS1363.
That's why it is important to know what our (now long unresponsive) OP is planning to plug in to the extension leads.
His view of
May not be so much in amperage terms, In my experience our average DIYer wrings his hands at the thought of plugging in a PC, printer, router and a 2TB disc into an extension lead, but will not even think about the implications of a washing machine + a tumble dryer in the same extension or socket.
I wait with ever increasingly bated breath - in the hope that we may learn of the application - but I fear that turkey, pudding, cheese and glasses of Portugal's finest may make me lose interest altogether.