Transistors

[James Jackson]

Hi all,
        Does any body know where I can get the following transisors from
here in England? They are big high power jobs, and I need them as I a
building a linear PA for my amateur radio setup. The part numbers are:

BLY88
BLX15

I think two of each would be nice, but I only need one of each.

I have tried the obvious suppliers (RS, Maplin, Cirkit) but they don't stock it.

Thanks,
James Jackson.