John Lewis has warned shoppers in Scotland they could face higher prices in an independent Scotland.
Partnership chairman Sir Charlie Mayfield said the company had no intention of reducing its presence north of the border, where it has nine shops, a contact centre and employs more than 3,000 people.
But he cautioned firms were unlikely to continue sharing the burden of the higher operating costs incurred in Scotland across UK customers in the event of the break up of the Union.
Sir Charlie told BBC Radio 4's Today programme:
John Lewis has reported buoyant trading over Christmas with like-for-like sales climbing 6.9 percent over the five weeks to December 28.
House of Fraser also performed well in the festive period, hailing its best ever Christmas with comparable store sales up 7.3 percent.
A five-year-old girl who wrote a letter of apology to department store John Lewis after she broke a bauble has been found following a social media campaign.
The girl, who signed her name as Faith, sent the letter after she accidentally broke the decoration while visiting a shop in Cambridge.
Branch manager Dominic Joyce launched a bid to find the girl on Twitter using the tag #findfaith, saying he would like to thank her for the "adorable gesture".
John Lewis confirmed that the girl's parents had been in touch this morning but had indicated that no further thanks was needed.
John Lewis has launched an appeal to find a five-year-old girl who wrote to the retailer apologising for breaking a Christmas bauble.
The girl, known only as Faith, sent a handwritten apology to her local store in Cambridge after she said she accidentally broke the decoration on a visit to the shop.
Staff at John Lewis are keen to meet the youngster but baffled as to who she could be.
Store manager Dominic Joyce posted the letter and the appeal on Twitter:
He told the Daily Mail: "We’d like to thank her and because of her adorable letter maybe give her something from the store she would like."
A computing professor from the United States who shares his name with the John Lewis department store has received a selection of gifts from the retailer as a thank you for directing Twitter users to their feed.
Mr Lewis, whose Twitter handle is often assumed by internet users to be the official account of the retailer, regularly and politely points errant tweeters back to the correct @johnlewisretail page.
Visit the @johnlewis Twitter feed to see the volume of helpful tweets he sends every day.
Lily Allen's cover of Keane's Somewhere Only We Know which has been used on John Lewis' Christmas advert has narrowly missed out on the number one spot in the charts.
Dutch DJ Martin Garrix, 17, sold 12,000 more copies than Allen's song with his debut single Animals.
The ad features a bear and a hare in an animated woodland tale, with Allen's tones providing the soundtrack.
The £7 million advertising campaign has also led to Keane's original version from 2004 climbing 74 places to re-enter the Top 40 at number 29.
Garrix, whose catchy dance tune is already a hit around the rest of the world, said he "didn't expect this success at all".
The John Lewis Partnership will pay £40 million to its staff following seven years of miscalculating holiday pay, the company announced today.
Up to 69,000 "partners" who work at the employee-owned retailer will be affected, with individual payments varying according to pay and shift patterns.
More than half of recipients are set to receive less than £120 each, but some workers will be given a few thousand pounds each in compensation.
The John Lewis Partnership has unveiled a staff windfall worth 17 percent of salary from a bonus pot of £210 million after reporting a 15.8 percent rise in pre-tax profits to £409 million.