There is no "Annual Inspection" requirement.
- The Regulations only require you to ensure that electrical equipment is maintained in a safe condition.
- They do not specify what needs to be done, by whom or how frequently.
- Your organisation can decide the level of maintenance needed according to the risk of an item becoming faulty.
You can do most inspections and assessments yourself, there is no need to pay a "professional" to do these on low risk items.
The frequency of checks is a matter of judgement and common sense, as long as you check these on a regular basis. You might want to check critical equipment or older equipment more often, and newer equipement on a less regular basis.
Most Risk assesments can be done by staff, this encourages self-responsibility and awareness of risk.