All major retailers are rolling out their Christmas campaigns as they aim to maximise brand awareness and drive revenue during the holiday season. Which brand will have the most engaging campaign of 2015?

PRWeek's five favourite Christmas campaigns so far

Special livery: Hope&Glory launches Virgin 'Christmas Trains' campaign

Hope&Glory has launched a Christmas train design for trains on Virgin's East Coast and West Coast routes, as part of a wider social media campaign.

Sainsbury's Christmas ad: first social media reaction

Instant reaction to Sainsbury's Christmas ad featuring Mog the cat has been very positive on social media - even if it failed to generate anywhere near the buzz of last week's launch by John Lewis.

Asda applauded for axing Black Friday

Asda's bold move to scrap Black Friday has been welcomed by retail and PR industry professionals.

Pret 'donates marketing to charity' for Christmas

Cafe chain Pret A Manger says it will "donate" its marketing channels and media to five charities this Christmas, after launching its Christmas sandwich range yesterday at a gift-wrapped store.

Flack on Friday: John Lewis, Coca-Cola, Andrew Lloyd Webber, Incisive Health

In Flack this week: Keith Vaz MP bursts Coke's bubble, some stern words on social media from the Met's media chief, a spad tells it like it is, and not underselling John Lewis.

Ad blocking a concern ahead of Christmas, says M&S marketing chief

Marks and Spencer has upped its digital spend in the run-up to Christmas but the retailer will be keeping a close eye on pesky ad blockers.

#FoundIt: Multi-channel campaign launches in-store and on social media

Debenhams uses Instagram competition to engage customers in Christmas campaign

Debenhams has launched its multi-channel Christmas campaign called 'Found It', which encourages customers to share the gifts they have found for family and friends on social media.

School Of Christmas: Lidl's virtual 'lessons' go live on social media

Lidl launches virtual School of Christmas with social agency Cubaka

Lidl is launching a 'virtual school' across its social and digital channels today following the release of its Christmas TV ad earlier this week.

Tour de force: Campaign is

Coca-Cola defends Christmas truck after Keith Vaz MP says vehicle is 'not welcome in Leicester'

Coca-Cola has responded to calls from MP Keith Vaz for the brand's Christmas truck tour not to stop in his Leicester constituency, saying that children under 12 will not be targeted directly for sampling and that no-sugar options will be available.

Coca-Cola gets interactive on Twitter for launch of Christmas truck tour

Coca-Cola has launched its annual Christmas truck tour with a twist that allowed the public to access details of the route by expressing their interest on Twitter.

Light up everything: Asda's #becauseitschristmas campaign

Asda reveals PR and social drive behind #becauseitschristmas campaign

Alongside its TV ad, Asda is pushing its Christmas campaign on social media and using its X Factor connections to win over journalists.

Watch latest Xmas campaigns

John Lewis extends Age UK partnership with behind-the-scenes film

John Lewis has kicked off the next phase of its partnership with Age UK with a campaign featuring behind-the-scenes footage from its Christmas ad, "man on the moon".

Kwik Fit: Christmas campaign promotes the company's winter safety check service

Watch: Kwik Fit turns to Taylor Herring for Christmas campaign

Kwik Fit's newly appointed comms agency Taylor Herring has created a Christmas campaign that was launched on social media earlier this week.

Sainsbury's Christmas campaign highlights child literacy with Mog author Judith Kerr

Sainsbury's has launched a Christmas campaign highlighting and raising money for child literacy, with a film of a new story by children's author and illustrator Judith Kerr as the centrepiece.

'Tis the season: Poundland ads will reach more than four million households, the firm says

Poundland to debut TV ads for Christmas campaign, but PR not part of festive drive

Poundland is launching its first TV adverts as part of its 2015 Christmas campaign, although there will be no specific PR element and broadcasts will be limited to the Yorkshire & Tyne Tees region.

Currys PC World ramps up £10m 'Spare the Act' Christmas campaign

Currys PC World is starting to roll out personalised hints for customers as part of its six-week 'Spare the Act' Christmas campaign.

Pret 'donates marketing to charity' for Christmas

Cafe chain Pret A Manger says it will "donate" its marketing channels and media to five charities this Christmas, after launching its Christmas sandwich range yesterday at a gift-wrapped store.

Harvey Nichols focuses on the joy of receiving rather than giving with new Christmas campaign

Harvey Nichols has launched a typically tongue-in-cheek Christmas campaign which centres on the joy of receiving rather than giving.

#WorldNeedsLove: WWF partners with Universal Music for Christmas campaign

WWF launches Christmas campaign with Universal Music and Will Young

Conservation charity WWF UK is launching its Christmas campaign tomorrow, #WorldNeedsLove, including a TV ad fronted by singer Will Young.

John Lewis Christmas 2015 campaign: Best parodies

The highly anticipated John Lewis Christmas advert has spawned numerous spoofs after being released on Friday.

'Little helps' is the heart of the Tesco Christmas campaign

Tesco has launched the first two films as part of its integrated Christmas campaign, featuring Gavin and Stacey star Ruth Jones for the second year running.

Cadbury promises to deliver joy with advent calendar trucks campaign

Chocolate maker Cadbury is sending 24 festive trucks - in the company's distinctive purple branding - across the country in the weeks before Christmas, with the vehicles together making up what the firm calls a "remarkable advent calendar".

Watch: MyVoucherCodes commissions 'discounted' version of John Lewis Christmas video for £700

Online discount voucher site MyVoucherCodes has piggybacked on the hype around the launch of John Lewis' £7m 2015 Christmas campaign by asking students to produce an equivalent for no more than £700.

The Art of Christmas: M&S breaks from tradition with campaign

Watch: Marks & Spencer moves away from traditional PR for 2015 Christmas campaign

Marks & Spencer has moved away from the traditional format of Christmas campaigns and created a series of seven shorter videos that will not be debuted on TV or social media.

Morrisons: Christmas campaign puts big focus on its employees

Watch: Morrisons kicks off #makeitmagical Christmas campaign with video

Morrisons kicks off its Christmas campaign today (Friday), focusing on how its staff are helping to make the season magical for customers, starting with a video debuting on its social channels this morning.

John Lewis kicks off integrated #OnTheMoon Christmas campaign

John Lewis has placed the themes of loneliness and the joy of social connection at the heart of its much-anticipated Christmas campaign which launched this morning following days of media speculation.