Please be aware of companies that claim to 'pat test' unrealistic amounts of items per hour/day and charge for items that do not require formal inspection and testing such as appliances supplied via a voltage source below 50 Volts ie. laptops, routers and other extra low voltage equipment, although the leads and adaptors that supply them may require inspection and testing depending upon construction, we come across rogue and unqualified service providers all the time specifically at locations where there tend to be a higher number of appliances such as schools, colleges, residential care. 

Remember - It is ALWAYS the responsibility of the Duty Holder to ensure that items are of such construction and maintained to prevent danger and that inspection and testing is being carried out to best practice.