I'm assuming you mean £'s by quids, so you'd want a UK supplier:
[strike]
Coolermaster GX 750W PSU
http://www.ebuyer.com/200490-coolermaster-gx-750w-psu-rs750-acaae3-uk
[/strike]
XFX Pro 750W Core Edition PSU - Single Rail 9x SATA 4x PCI-E
http://www.ebuyer.com/241552-xfx-pro-750w-core-edition-psu-single-rail-9x-sata-4x-p1-750s-ukb9
Corsair 700W GS Series PSU
http://www.ebuyer.com/263996-corsair-700w-gs-series-psu-cmpsu-700guk
Corsair GS 700W Gaming Series PSU
http://www.ebuyer.com/390263-corsair-gaming-series-700-watt-80-bronze-atx-ps-2-uk-version-cp-9020013-uk
[strike]OCZ ZS Series 750W 80+ Bronze PSU with 135mm Fan & single +12V Rail
http://www.ebuyer.com/264510-ocz-zs-series-750w-80-bronze-psu-with-135mm-fan-single-ocz-zs750w-uk[/strike]
[strike]
OCZ ModXStream Pro 700W Modular PSU Single 12V Rail 135mm Fan
http://www.ebuyer.com/152008-ocz-mxsp-series-700w-80-psu-modular-single-12v-rail-135mm-fan-ocz700mxsp[/strike]
[strike]
[strike]Coolermaster 700W GX Lite PSU
http://www.ebuyer.com/352622-coolermaster-700w-gx-lite-psu-rs700-asabl3-uk[/strike]