Electrical fault finding
Tracing why a circuit trips, a light flickers or a socket is dead, charged by the hour because the time depends on what is found. Of the 543 electrical fault finding businesses on Tradehand, 314 are in London, followed by 19 in Bristol, 17 in Leeds, 12 in Birmingham and 11 in Sheffield. The work also goes by electrical diagnostics, tracing a fault and tripping electrics. Electrical fault finding cost guide
Why people have it done
- The cause is traced rather than guessed at, so the repair meets what is actually wrong.
What needs doing?
Tell us what you need done. We'll tell you the price, then find a local electrician to do the job.
Electricians who do electrical fault finding
Worth knowing
- Within London, Enfield has 24, Croydon 23, Barnet 21, Bromley 20 and Havering 15.
- Published prices run from £120 to £180 in Croydon, £120 to £165 in Bristol, £90 to £190 in Leeds, £80 to £155 in Ealing and £90 to £205 in Birmingham.
- 535 of the 543 have their own website.
- 148 of the 543 are active companies at Companies House, incorporated between 1991 and 2025, with a median year of 2019.
- 326 also offer consumer unit replacement, 305 EICR, 299 house rewiring and 227 lighting installation, and the businesses carry out 89 other services between them.
Common problems
No Power In One Room
One room in your home has completely lost power while the rest of the house works fine.
RCD Keeps Tripping? Common Causes & How to Fix It (2026)
Your RCD keeps tripping and cutting power to multiple circuits. This guide covers every common cause (from faulty appliances and moisture to wiring faults and nuisance tripping) plus exactly what to do about it.
Lights Flickering In The Whole House
Every light in your home is flickering or dimming at the same time: this affects the entire property.
Fuse Box Buzzing Or Humming
Your consumer unit or fuse box is making a buzzing or humming noise that was not there before.
Burning Plastic Smell From Electrics
A chemical, acrid, burning plastic smell is coming from your electrics.
Sparks When Plugging Something In
A tiny, silent flash as the pins touch a switched-on socket is current starting to flow and leaves no mark. A large, loud or orange spark, a spark every time, scorch marks, or a trip is a fault: stop using that socket and get it checked.
Browse by area
Popular
- Electrical fault finding in London 418
- Electrical fault finding in Bristol 23
- Electrical fault finding in Leeds 20
- Electrical fault finding in Sheffield 18
- Electrical fault finding in Birmingham 14
- Electrical fault finding in Colchester 12
- Electrical fault finding in Eastleigh 11
- Electrical fault finding in Loughton 11
London
- Electrical fault finding in Croydon 31
- Electrical fault finding in Enfield 30
- Electrical fault finding in Bromley 26
- Electrical fault finding in Barnet 25
- Electrical fault finding in Havering 24
- Electrical fault finding in Waltham Forest 19
- Electrical fault finding in Ealing 18
- Electrical fault finding in Sutton 18
- Electrical fault finding in Hounslow 16
- Electrical fault finding in Lambeth 15
- Electrical fault finding in Haringey 14
- Electrical fault finding in Redbridge 14
- Electrical fault finding in Wandsworth 14
- Electrical fault finding in Bexley 13
- Electrical fault finding in Merton 13
- Electrical fault finding in Camden 11
- Electrical fault finding in Richmond upon Thames 11
- Electrical fault finding in Brent 10
- Electrical fault finding in Hillingdon 10
- Electrical fault finding in Lewisham 10
- Electrical fault finding in Kingston upon Thames 9
- Electrical fault finding in Barking and Dagenham 8
- Electrical fault finding in Hackney 8
- Electrical fault finding in Hammersmith and Fulham 7
- Electrical fault finding in Islington 7
- Electrical fault finding in Newham 7
- Electrical fault finding in Southwark 6
- Electrical fault finding in Tower Hamlets 6
- Electrical fault finding in Westminster 6
- Electrical fault finding in Harrow 5
- All of London 418