No, and this is true for heaps of parts. DK and mouser are the only immediate source for just about anything remotely specialist, this includes power and specialist ADC/DAC/OpAMP type ICs from TI/AD. RS/Farnell basically are the next day (when they manage it) option over here in the UK and their catalogues are limited. Many parts are simply not stocked by distribution in the UK or they are hidden behind that lovely, RFQ-PO-Supply chain that will probably take you 3+ days anyway.
In vaguely commercial qtys a broker might find you some stock quicker than 3 days, but you have to trust them and their source. this is what Findchip etc might locate for you