Officers revisited the crash scene over the Bank Holiday period

The victims, including two children, died when the bus left the road and hit a group of holidaymakers at Ingoldmells near Skegness.

Officers returned there over the May Bank Holiday weekend to set up a mobile police station.

Inspector Les Parker said police still want video footage or pictures, but did speak to several new witnesses.

'Badly affected'

He said: "It's not the sort of thing that people expect when they are enjoying the day out at the seaside and it has left people quite badly affected.

"Hopefully this weekend we've been able to point them in the right direction to get some help."

The bus driver, a 50-year-old man from Louth, has been interviewed and released on police bail until June.

Joanne Warren, 37, from Leicester, and her sons Jacob, five, and Leyton, four months, died in the accident.

Paula Rhodes, 30, and her husband Richard, 32, from Mansfield, were also killed.

About 150 mourners attended a service at St Peter's Church in Braunstone, Leicester, on Friday morning for Mrs Warren and her children.