A typical list of services can include:

New build developments
Re-wires & Partial Re-Wires
Extensions
Garages
Outside lighting
Additional sockets
Additional lighting
Consumer unit/Fuse board replacements & upgrades
Replacement of accessories
Electric showers  
Boiler Wiring

This is an example of work that can be carried out, I would be delighted to help providing ideas to ensure you get the job completed professionally how you would like it by a tradesman you can trust.