LARS
Each year I will have at least three or four pilots come to me for advice having been reported for infringing Controlled Airspace or a Tempory Restricted Zone such as for air displays, including the Red Arrows airspace on more than one occasion.
In most cases the pilot was not in reception of at least a basic service but if they had of been they would most likely have been warned by ATC before things went pear shape.
The London FIS is an excellent service even though without RADAR. I would recommend all to be in touch with a local LARS unit but if it is not possible then use the London or Scottish FIS and receive a Basic service, you will at least have a first class and professional extra brain working with you.
The best way of avoiding other traffic is looking out of the window, whatever the level of service!