MCDONALD’S customers across Scotland and the rest of the UK are being left disappointed as the restaurant chain has run out of milkshakes.

Supply chain issues which industry bosses have made clear are down to Brexit have now hit the fast food giant, with bottled drinks also running out at some 1250 sites.

A McDonald’s spokesperson said staff are “working hard to return these items to the menu as soon as possible”.

READ MORE: Food shortages are due to Brexit not Covid pandemic, industry says

They went on: “Like most retailers, we are currently experiencing some supply chain issues, impacting the availability of a small number of products. Bottled drinks and milkshakes are temporarily unavailable in restaurants across England, Scotland and Wales.

“We apologise for any inconvenience, and thank our customers for their continued patience.”

Customers have taken to social media to tweet about their disappointment, with one writing: “I just went to McDonalds - they’ve got no milkshakes and the fizzy drinks ‘might be flat’. What is going onnnn?!”

McDonald’s joins other multinationals including KFC and Nando’s in suffering shortages across UK sites as a result of the exit from the EU.

KFC announced a shortage of chicken in recent weeks, while Nando’s was forced to close sites in Scotland and across the UK due to food shortages.

Rod McKenzie, the RHA’s managing director of policy and public affairs, said that around one-fifth of the 100,000 shortfall in truck drivers across the UK was directly due to EU nationals leaving after Brexit.

He said that increased bureaucracy at border crossing was also putting EU drivers off entering the UK.

"If the 'pingdemic' hadn't happened, we'd still be in trouble," he previously told CNN.

Others in the poultry industry said that the “a structural change in the UK labour market” looked to be taking place post-Brexit which was unlikely to be remedied soon.