Postal addresses
Head office
Boost Power 1 Rivergate Temple Quay Bristol BS1 6ED
Customer service
Contact Boost
Every way to reach Boost customer service in the UK — general enquiries, prepayment, gas emergency, HomeCare, complaints, Welsh service, Relay UK textphone and the Energy Ombudsman complaint route.
At a glance
The Boost numbers that matter most
Online portal
My Account
https://my.boostpower.co.uk/
For a suspected gas leak or carbon-monoxide release, call the National Gas Emergency line on 0800 111 999 immediately — free, 24/7, covers every UK gas supplier. Leave the property, do not switch on lights or use any electrical appliance.
Every line you might need
Boost phone directory
Different queries route to different teams. Use the directory below to dial the right line first time and skip the in-line transfer.
| Department | Number |
|---|---|
| General enquiries (from a landline) | 0330 102 7517 |
| General enquiries (from a mobile) | 0117 332 3728 |
| Gas emergency, National Gas Emergency line (free) | 0800 111 999 |
| Power cut, local network operator | 105 |
| Energy-theft reporting (Stay Energy Safe, free) | 0800 023 2777 |
Power cut right now?
Lost power? Report it and check the live map
A power cut is fixed by your local network operator, not your supplier. Call 105 free, 24/7 (Northern Ireland: 03457 643 643), then report it so neighbours can see it on the live UK map.
In writing
Email, contact form & postal address
Complaint not resolved?
Escalate free to the Energy Ombudsman
If Boost has not resolved your complaint within 8 weeks, or has issued a deadlock letter sooner, you can take it free of charge to the Energy Ombudsman — the independent ADR scheme approved by Ofgem.
The Ombudsman's decision is binding on Boost. Using it does not affect your right to take court action separately. Have your account number, complaint reference and key dates ready before you file.
Common questions
Contacting Boost — frequently asked questions
You can reach Boost customer service on 0330 102 7517, Mon-Fri 8 a.m. to 6 p.m., Sat 9 a.m. to 1 p.m.. For a faster response outside hours, use the online account, the contact form, or the mobile app where available.
Call 0330 102 7517 (Mon-Fri 8 a.m. to 6 p.m., Sat 9 a.m. to 1 p.m.) and follow the voice menu — choosing the option for an existing-customer billing query, or saying "speak to an agent", usually reaches a human fastest. Lines are quietest early morning and mid-afternoon midweek. Have your account number and supply postcode ready so the adviser can pass security quickly.
It depends on the prefix. 0800 and 0808 numbers are free from UK landlines and mobiles. 03 numbers (such as 0330, 0333 or 0345) cost the same as a standard 01 or 02 call and are included in any inclusive minutes on your mobile or landline tariff, so they are effectively free for most callers. The National Gas Emergency line (0800 111 999) and the 105 power-cut line are always free, 24/7.
For life-threatening emergencies always call 999. For a gas leak, suspected carbon-monoxide release or damaged gas pipe, call the National Gas Emergency line on 0800 111 999 — free, 24/7, and covers every gas supplier in Great Britain (not just Boost). For a power cut, dial 105 to reach your local electricity network operator.
Boost does not publish a public email address. The fastest written channels are the in-app or in-portal secure-message inbox, or a direct message via social media for general enquiries.
First, raise the issue directly with Boost — by phone, email, contact form or online account. Keep written records of every notice and reply. If the complaint is not resolved within 8 weeks, or you receive a deadlock letter sooner, you can escalate it free of charge to the Energy Ombudsman, the independent ADR scheme approved by Ofgem. The Ombudsman's decision is binding on Boost.
Boost does not currently advertise a public live-chat option for residential customers. Use the online account, mobile app or contact form for written enquiries, or the phone line for anything urgent.