cheap travel clinic in london?

hello! i need a rabies vaccine treatment and i am shocked by the price of it! the cheapest i found is the fleet street clinic which charges £24.50 per dose plus a £45 consultation fee, anything cheaper out there? thanks!
i am a citizen of the UK but the rabies vaccine isnt available on the NHS, i have already been vaccinated for typhoid,polio,tetanus,hepatitis A and diphteria, its just rabies that i need.

You could try www.trailfinders.com as they have a travel clinic in their Kensington High St store. Also suprisingly some Dr’s will do vacinations (not all but you should phone the nurse at the surgery and ask). Try also contacting NHS direct as well who may be able to advise you on this. www.nhsdirect.nhs.uk