When selecting an electrician in your local area always ask questions.
Find out if they are part of a CPS scheme such as napitt this ensures your electrician is competent and registered.
Find out they have the correct insurances, we are insured for 5million pound this is 3million above the trade normal.
Look out to see if they are registered with companies house and VAT registered. This gives you piece of mind that the electrician you are choosing are here to stay.