Pros
Rewarding work, friendly and supportive employees, generally laid back atmosphere. If you enjoy games and are willing to put in the effort to find bugs you will both make friends and enjoy your work here. There are also some things have changed since other reviews were left. The office has changed premises to a building with a courtyard where employees can take breaks and has a kitchen which is open to everyone. There is no parking immediately next to the office but there are a number of cheap car parks within a 5 minute walking distance. Yes, the majority of workers are white and male. That's not surprising given the job. However, the workplace is friendly to LGBT and racial diversity.
Cons
Zero hours contract, so sometimes there are periods where work is scarce. It can take some time before you are able to prove yourself as a good tester. However, if you are able to do so you will find yourself in consistently, unless there aren't many projects in. Things can get cramped on lunch breaks as space where people can use their phones or other devices is limited. Sometimes the boss gives you a dressing down and can say things which sound out of touch.