Covid-19 restrictions meant Wimbledon had a different look on the opening day of the 2021 championships.

The tournament returned to the calendar this summer after last year's event was cancelled due to the coronavirus pandemic.

Here, the PA news agency examines how different the All England Club looked compared to two years ago:

It was not just the courts that ground staff had to focus on preparing this year.

The famous Wimbledon queue was not in operation.

A low-key entrance.

'Murray Mound' had a different look as key workers were thanked for their efforts during the pandemic.

Restrictions were in place.

There was a reduction in numbers at the All England Club.

Murray Mound took a hit.

The Royal Box was still well populated.

Centre Court was at 50 per cent capacity.

But some things never change.