A self-service Post Office has opened at Ivy Stores in Amersham.
The new service allows customers to collect and return prepaid parcels, top-up their phones and pay bills using a handheld device.
Around 100 Drop and Collect stores are being trialled across the UK after being launched earlier this year.
Mrs Patel took over Ivy Stores three years ago and says that the shop has received an increased number of customers since introducing the new Post Office and the service has received a good response.
Natalie Liff, Post Office propositions manager, said: “Drop and Collect is a new, lighter branch format that offers our postmasters and retail partners greater opportunity to adapt their business to suit their needs and the needs of their local customers.
“This new format has been developed to increase customer access to key services they require and to simplify the customer experience, including reducing transaction times.”