Is replacing a fluorescent batten with an LED batten Part P notifiable?

Like-for-like replacement of a light fitting on an existing circuit is not notifiable under Part P of the Building Regulations. You are changing the fitting, not the circuit. If you need to run new cable or create a new circuit, that work does require notification to building control.

Do I need to rewire anything to fit an LED batten?

In most cases no. LED battens connect to the same L, N, E supply that fed the old fluorescent fitting. The only difference is that modern LED battens are single-ended, so both live and neutral enter from one end rather than two separate end-caps.

Will a 1200 mm LED batten fit in the same mounting holes?

Usually yes — standard 1200 mm LED battens follow the same 1200 mm fixing centres as the fluorescent fittings they replace, particularly those made for the UK market. Check the manufacturer's fixing diagram before buying.

Why has the UK stopped selling fluorescent tubes?

The UK followed the EU in phasing out fluorescent lamps as part of energy-efficiency legislation. T8 and T5 fluorescent tubes were withdrawn from sale from September 2023. LED replacements use 50 to 70 per cent less energy and last significantly longer.

Can I fit an LED batten where an old surface-mounted incandescent fitting was?

Yes, provided the circuit is rated appropriately. An LED batten draws very little current, so it will work on any standard lighting circuit. The physical fixing holes may differ, but most LED battens come with flexible fixing brackets for this reason.

How to Replace a Fluorescent Tube Fitting with an LED Batten (UK)

Helpful video reference. We reference John Ward's (jwflame) video "JCC Toughled Pro — FINALLY, an LED Batten for British Electrical Installations!" as the video reference here. John is a qualified UK electrician whose channel focuses on real-world British wiring practice. He gets the UK-specific parts right: correct wiring colours, isolation at the consumer unit, and what to look for in a fitting built for British installations.

Before you start. Turn the lighting circuit off at the consumer unit — not just at the wall switch. Confirm the fitting is dead with an approved voltage tester at the terminals before removing any wires. Do not rely on the wall switch alone. If the cables inside the fitting are rubber-insulated or cloth-sheathed, stop and call an electrician: old wiring like that needs a full inspection before any work is done.

1. Choose the right replacement LED batten

Fluorescent battens come in three common lengths: 600 mm (2 ft), 1200 mm (4 ft) and 1500 mm (5 ft). Measure the old fitting and buy an LED batten to match. The mounting hole centres on UK-market LED battens are standardised, so a 1200 mm LED batten will typically drop straight into the fixing holes of the fluorescent fitting it replaces.

Check the lumen output rather than just the wattage. A 19 W LED batten replaces a 36 W single fluorescent tube and puts out more usable light. For a garage or utility room you want at least 2000 lumens per 1200 mm fitting.

Also check the IP rating. Garages and kitchens that have steam or damp are fine with IP20, but any fitting within 600 mm of a sink or shower needs IP44 as a minimum.

2. Isolate at the consumer unit

Find the MCB for the circuit that feeds the fitting and switch it off. In a house with a rewireable fuse board, pull the fuse cartridge and put it in your pocket. Go back to the fitting and test with an approved voltage indicator at the terminals before touching anything. Dead in all positions? Good.

3. Remove the old fluorescent tube, starter and body

Twist and remove the tube, then unclip the starter (a small cylinder in a bayonet holder on the fitting body). Take a photograph of the wiring inside the end cap before disconnecting anything. Most fluorescent fittings have terminal blocks at each end connecting live, neutral and earth. Some have a ballast (a heavy transformer block) wired in series.

Unscrew the terminal connections, withdraw the cables from the fitting, then unscrew the batten body from the ceiling or wall.

4. Identify the cables

You may find one cable or two, depending on how the circuit was wired. Single cable usually means the fitting is at the end of the run. Two cables mean it is in the middle of a loop.

Cable colours to expect:

Modern T&E (post-2004): brown for live, blue for neutral, bare or green-and-yellow for earth.
Older T&E (pre-2004): red for live, black for neutral, bare or green-and-yellow for earth.
Switch cable: grey or brown sleeved black core for switched live.

If the colours do not match either of those patterns, or you find more than two cables with no clear explanation, stop and seek advice from a qualified electrician before continuing.

5. Connect the LED batten

Modern LED battens connect at one end only. The terminal block inside the entry end is marked L, N and E (or uses the earth symbol). There is no ballast to wire around and no starter to fit.

Insert the live conductor (brown or red) into the L terminal, neutral (blue or black) into N, and earth (green-and-yellow or bare, sleeved in green-and-yellow) into E. Tighten each screw or push firmly into the push-in terminal until it is secure. Give each conductor a gentle tug to confirm it is held.

If your circuit has two cables (a loop), both conductors of the same colour go into the same terminal. Check the manufacturer's instructions for the correct configuration: most LED battens show a wiring diagram inside the terminal cover.

6. Fix the batten and close the terminal cover

Hold the batten against the ceiling and line up the fixing holes. In most cases the new batten will use the same holes as the old fitting. If not, drill and plug new holes at the mounting positions shown in the instructions. Use the correct fixings for your ceiling type (masonry anchors for concrete, toggle bolts or dedicated plasterboard fixings for a plasterboard ceiling).

Clip the terminal cover back into place, making sure no insulation is trapped underneath.

7. Restore power and test

Back to the consumer unit, turn the MCB back on. Switch the light on at the wall. The LED batten should light immediately with no flicker or warm-up delay. Check the full length of the fitting for any dark areas, which would indicate a faulty LED strip inside.

If the MCB trips when you restore power, switch it back off, return to the fitting, and check that no bare conductor is touching the metal body of the batten or the ceiling backplate.

Stop and call an electrician if: you find rubber or cloth-sheathed cables inside the fitting, the earth conductor is missing, the MCB trips repeatedly after the change, the LED batten flickers at low brightness or does not light at all despite correct connections, or there is any sign of scorching or heat damage in the ceiling void above the old fitting.

When to call us

A straight swap on an existing circuit is generally straightforward for a confident homeowner who follows isolation procedure properly. The job becomes a call-an-electrician one the moment you find old wiring that needs assessing, there is no earth on the circuit, or you want to add a new fitting where there was not one before (that is a new circuit, which is notifiable under Part P).

Richard covers small jobs across Sandwich and east Kent at the standard £10 per 10-minute local rate.

Need a fluorescent fitting replaced in Sandwich?

Richard can swap out old fluorescent strip lights for LED battens as a small local job, or quote for a full garage or workshop lighting upgrade.

Contact Richard

How to replace a fluorescent tube fitting with an LED batten