Question: places to do a bbq?
Answer: Lincoln's Inn Fields, Holborn. Central London parks aren't just for stuffing sarnies into your face at lunchtime. ... 
Waterlow Park, Highgate. ... 
Caledonian Park, Holloway. ... 
Highbury Fields, Islington. ... 
Russell Square, Bloomsbury. ... 
Burgess Park, Southwark. ... 
Cantelowes Gardens, Camden.