A High Court judge has dismissed a challenge brought against Lambeth Council by a local campaigner over its decision to use parts of Brockwell Park for a series of festivals. The South London park has played host to a number of major events in recent years, including  Mighty Hoopla , Wide Awake and  Field Day , but those appeared to be in jeopardy after  a campaigner took legal action against Lambeth Council last summer , arguing that the festivals did not have the correct planning permission. The campaign group, made up of locals in the Brixton area, complained that such “large-scale” events cause environmental damage and block public access to the park for extended periods. Local campaigner Juliet Chambers sought to legally challenge the council, claiming that the planning permission it granted was “unlawful” and that it had misinterpreted the word “recreation”, per BBC News .…