July 8 (Reuters) - Britain's largest affordable housing builder Vistry warned of a first-half pre-tax loss of £30 million ($40.06 million) on Wednesday, but said cuts to costs, inventory and land purchases would deliver profits for the second half.

The warning sent its shares down by as much as 11%, making Vistry the biggest faller on the FTSE mid-cap index as of 0803 GMT.

The cost-cutting measures are part of a strategic overhaul being delivered by CEO Adam Daniels, who took over three months ago.

To bring down debt levels and adapt to current levels of demand, Daniels said on Wednesday he would reduce the company's regional footprint, land bank and work in progress. The company would also cease part exchange operations, which entail buying a home-owner's existing property as part payment.

In May, the builder warned of significantly lower interim and full-year profits, without providing exact figures, citing the economic impact of the Iran War on material and labor costs, which will squeeze margins, and on consumer confidence, which could reduce housing demand.

On Wednesday it said it completed about 6,100 homes in the first half, down from 6,889 a year earlier, as delays in partner-funded deals were renegotiated after failing to meet commercial requirements. Several are expected to be completed in the third quarter.

For the full year ending in December, Vistry said it expects to report adjusted profits of £200 million, in line with analyst estimates.

Although net debt was £470 million on June 30, the company expects to end the year with net cash exceeding £100 million.

Vistry also expects to benefit in September from the confirmation of government affordable housing grants. It said second-half results should also be boosted by higher sales on the open market and homes built with investment partners, as well as the impact of its strategic overhaul.

Vistry is scheduled to report its half-year results in September.

Also on Wednesday, the company said its Chief Financial Officer Tim Lawlor, who had held the role since 2022, will leave for a privately owned business in a different sector. He will remain until October after the CEO review is completed and half-year results are published.

($1 = £0.7488)

(Reporting by Raechel Thankam Job in Bengaluru; Editing by Nivedita Bhattacharjee and Barbara Lewis)

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