I’d rather eat dog food than eat at Garfunkel’s (though some would argue there isn’t much difference.) It’s as if they bought a job lot of frozen stuff in bags and are working their way through it – even the supposedly fresh stuff e.g. salad garnish, looked tired and old.
I’d give Garfunkel’s a miss if I were you.

Garfunkel's may look alright from the outside, but it's just another chain that London is already heaving with.
Garfunkel's sells the usual burgers and salads and onion rings, and to be honest it's best left to the tourists.