*

Engines, batteries units restart on Wednesday

*

Main production lines restart later this week

*

Offers qualifying suppliers upfront cash payment for parts

*

Quarterly sales volumes drop

(Adds business minister comments in paragraphs 8-9, sales

figures in paragraphs 10-11)

By Sarah Young

LONDON, Oct 7 (Reuters) - Britain's biggest carmaker,

Jaguar Land Rover (JLR), said on Tuesday some factories would

restart manufacturing on Wednesday after an almost six-week

shutdown following a cyberattack, one of the country's most

disruptive hacks.

To try to help smaller parts suppliers who have been pushed

to the brink after weeks without business, JLR also announced it

would be providing some companies with up-front cash for parts

during the production restart phase.

The luxury carmaker, owned by India's Tata Motors,

has three factories in Britain, which together produce about

1,000 cars per day, and economists had warned of the impact of a

prolonged shutdown on the country's manufacturing output.

HIGH PROFILE HACKS

JLR was the latest high profile cyberattack target in

Britain this year, and comes after one of the country's major

retailers Marks & Spencer ( MAKSF ) lost about 300 million pounds

(about $400 million) after a breach forced it to shut down its

online shop for two months.

The incidents highlight the vulnerability of global business

to increasingly sophisticated and more frequent attacks. Last

month, a ransomware attack on check-in services left passengers

stranded across major European airports.

JLR, which analysts estimated was losing around 50 million

pounds per week from the shutdown, was provided with a 1.5

billion pound loan guarantee by the British government in late

September to help it support its suppliers.

Business minister Peter Kyle said in a statement on Tuesday

that his focus was on helping JLR resolve the incident and

supporting the long-term health of the auto supply chain, which

supports over 180,000 manufacturing jobs.

"This is very welcome news for workers and suppliers, but I

know many are still under pressure, particularly further down

the supply chain," he said.

PHASED RESTART

JLR said in a separate statement on Tuesday that for the

three months to September 30, wholesale and retail volumes

dropped 24.2% and 17.1%, respectively, reflecting the impact of

the production stoppage, plus the planned wind down of legacy

Jaguar models and the effect of U.S. tariffs.

"It has been a challenging quarter for JLR," JLR CEO Adrian

Mardell said in a statement.

JLR said its engines and battery units would restart work on

Wednesday, as well as parts of its vehicle production plant

including its body and paint shops, meaning the return of some

of its 33,000 staff to work.

Production lines for the Range Rover and Range Rover Sport

vehicles at its main factory in Solihull will start later this

week, the company added.

Qualifying suppliers of parts used in the company's

just-in-time production lines will now be paid shortly after the

point of order, JLR said, compared to a previous 60-day

post-invoice arrangement, helping to allay fears that some

smaller businesses could go bust.

($1 = 0.7445 pounds)