Everyone assumes Ritz necessary at £65 but honestly feels like stuffy museum experience. Sketch Mayfair does brilliant tea £75-85 and pink tearoom genuinely stunning - like dining inside Georgia O'Keeffe painting.

My favorite involves buying treats Fortnum & Mason food hall and eating them St James's Park across street. Their scones £2.50 each, proper clotted cream £4, sit by lake watching pelicans. Total under £15 versus £65+ elsewhere.