Greggs eyes 3,500 sites – but its plans could prove to be flakySausage roll giant Greggs plans to open hundreds more bakeriesSausage roll titan Greggs is already a fixture of almost every British high street, but it’s not done yet. Beloved budget bakery Greggs has become the Canary Islands’ newest attraction, in its first expansion beyond the UK. Read more On a roll: Greggs shares soar as it doubles down on aggressive expansionThe bakery chain had become the UK’s most shorted company in recent months. Greggs expansion ‘is not overambitious’Greggs admitted that its ambitious expansion could come at the cost of short-term profitability. The baker’s expansion plans do “not look overambitious at this stage,” said Lale Akoner, an eToro market strategist.