Mobile network services are being upgraded in Dorchester, boosting speed, performance and coverage.

However, there is a chance these improvements may cause interference to TV received through an aerial, such as Freeview, BT, TalkTalk ad YouView. It could be intermittent sound, blocky images or loss of TV signal.

For residents who are affected by the upgrades, free support is available from Restore TV, an independent programme created by Digital Mobile Spectrum Limited - which is owned by the UK's four mobile network operators: EE, Virgin Media O2, Three and Vodafone.

Restore TV's role is to ensure people can continue to enjoy free to view TV if mobile service upgrades cause TV interference. 

The programme offers additional support for people who are aged 75 or older, are registered blind or partially sighted or receive benefits such as personal independence payments, attendance allowance, constant attendance allowance or war pensioner's mobility support.

Ben Roome, CEO of Restore TV, said: "We know just how important TV is to inform, entertain and provide welcome company. Restore TV exists to ensure we call can continue to access free to view TV as mobile services are improved across the country.

"If you see new TV interference, we're on hand to help you resolve the issue. We can send a Restore TV filter, free of charge, for you to fit between your aerial lead and TV or set-top box to remove mobile signals to allow you to watch free to view TV as normal, full instructions are included, and we can provide further advice online and by phone if needed.

"In more instances, fitting the filter will resolve any issues, but if this isn't the case, we may also be able to arrange a follow-up visit from a Restore TV engineer at no cost, depending on eligibility."

Cable and satellite TV, such as Sky or Virgin, are not affected. However, viewers with these services, who also watch free to view TV through an aerial, can receive a free Restore TV filter.

Residents are more likely to be affected if they live in an area with weak digital television reception, have a TV signal booster and whose TV aerial is close to a mobile mast.

For residents in flats or communal buildings, Restore TV provides landlords or property managers with support to resolve the problem.

Any viewers who experience new interference to free to view TV should contact Restore TV on 0808 13 13 800 or at restoretv.uk