TalkTalk generated £44m of profit in the same period a year ago.
The company, which is led by executive chairman Sir Charles Dunstone, said that the company was experiencing "strong demand" for its low-price TV, internet and phone plans.
TalkTalk said its broadband base grew for the third successive quarter and customer churn, the rate at which people leave for rivals, had improved year on year from 1.5% to 1.3%. It added 46,000 subscribers to its network, compared with losses of 29,000 in the first half of a year ago, although lower prices reduced its average revenue per user.
Harrison said the firm had achieved this despite "an uncertain economic environment".
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The company turned over £353.5m in the six months to 30 September 2017, up from £348m for the same period a year ago . In the second quarter, revenue increased by 6.2% to GBP183.2 million compared to the equivalent quarter a year ago.
Chief exec Tristia Harrison said: "When we simplified and reset the business in May we said our priorities were growth, cash and [earnings before interest, taxes, depreciation and amortization] in that order".
TalkTalk swung to a heavy loss in the first half and signalled that its full-year profits will come in at the lower end of guidance, as it counted the costs of a failed attack on the mobile market and spent freely to attract new broadband subscribers.
The company took a £59m exceptional charge for costs including £20m associated with "implementing changes to the group's organisational structure under the new leadership team". "Our revised strategy of focusing the business on fewer, clearer priorities is re-establishing TalkTalk as the value provider of choice in the United Kingdom fixed connectivity market".
There was also a £31m charge at its mobile business as a result of a strategy review.
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