Booking a Tesco home delivery slot isn't easy at the moment, but it is possible for some customers.

If you've been unsuccessfully trying for a while now, you're not alone.

Tesco has been inundated with demand for its food delivery service over the past few weeks as more shoppers stay home. With such a high volume of orders, Tesco is urging those who are able to shop in its physical stores, which have been overhauled with protective measures against the spread of COVID-19.

That means if you're not high risk, elderly, or self-isolating, you should still be heading down to your local store to pick up your groceries. However, if you do need a Tesco delivery, there are a number of ways to improve your chances of getting one.

Here, we'll be running through the best ways to try and get a grocery delivery from Tesco, as well as just how Tesco's Click - Collect service works. Tesco food delivery: new slots available throughout the dayAccording to Tesco, new home delivery slots are being made available daily - so if you need one, your best bet is to keep checking throughout the day.

In addition, on 24th March, Tesco also tweeted: "New slots are opened up each day 3 weeks in advance at around 23:30 - 00:30." Look for a delivery slot at Tesco nowGov.uk: Register for coronavirus support if you’re clinically vulnerableIf you're an elderly or vulnerable customer, make sure you're registered on the gov.uk list ofclinically extremely vulnerable people.

Tesco has said that it is using this register to prioritise its home delivery slots.

You can register yourself, or on behalf of someone else.How to get a Tesco home delivery slotTesco recently announced a vast expansion of its fleet of food delivery vans and drivers, following a hiring surge over the past week.

That means there are now more Tesco food delivery slots available than ever before: 780,000, to be precise, up from 660,000 to weeks ago. That doesn't mean it's a free for all out there, though.

Tesco is prioritising the elderly and vulnerable in its booking system, so if you have been deemed high risk, head over to Gov.uk to register yourself as a clinically vulnerable person.

You’ll be asked for your NHS number - which you can find on any letter the NHS has sent you, or on a prescription - but you can still register if you don't have it.Tesco is using the Government's register to make sure its most vulnerable customers are prioritised, so if you fall into this category, the best way to increase your chances of booking a Tesco home delivery slot is to make sure you're on the list. And if you're self-isolating, your best bet is to keep trying.

New Tesco home delivery slots are added throughout the day, so keep checking back regularly.How does Tesco click - collect work?If you don't qualify for prioritisation in Tesco's home delivery service, you can still order your food through its click - collect service.

Simply select your groceries with Tesco Online and select click - collect before you checkout. There are far more slots available for this service than home delivery, and it's potentially safer than shopping in store right now, plus you won't need to queue.