Friday broker round-up

Debenhams: Deutsche Bank upgrades to Hold with a target price of 50p.

Marks & Spencers: Barclays initiates on Overweight with a target price of 410p.

Talk Talk: HSBC upgrades to Buy with a target price of 250p.

Dominos Pizza: Peel Hunt upgrades to Buy.

National Grid: Macquarie upgrades to Neutral with a target price of 1005p.

Centrica: Macquarie downgrades to Neutral with a target price of 220p.

Rio Tinto: HSBC maintains Buy with a target price of 4000p.

Hastings Group: Berenberg reiterates Buy with a target price of 253p.

Essentra: Citi downgrades to Sell with a target price of 440p.

Acacia: Jefferies reiterates Hold with a target price of 450p.