"Gareth, good luck. Stick to what you're doing, I'm behind you", he added. "It was important he tried to reconnect with the fans and he certainly has done that".
"When England played Colombia we noticed traffic levels drop by about a third, so we're anticipating similar on Wednesday", said Frank Bird, an emergency planning officer at Highways England.
"I don't think the players are as good as they have been in the past, but it nearly doesn't matter", he added.
They now potentially stand just 90 minutes away from their first major tournament final in 52 years, when they last won the World Cup back in 1966.
"Our country has been through some hard moments recently in terms of its unity and I think sport has the power to do that and football in particular has the power to do that".
It's great for them they have got some enjoyable experiences of playing for England. So we can feel the support from home.
Gareth Southgate's stock has risen so much since he travelled to the 2018 World Cup as England manager that some are suggesting a knighthood could be on its way. "It's a very special feeling, it's a privilege for us".
Croatia finished top of Group D by beating Nigeria 2-0, Argentina 3-0 and Iceland 2-1, but needed penalty shootouts to get past Denmark in the last 16 and Russian Federation in the quarter-finals. The team is getting better and better with every game and that was the same with us in 1966, which is why I'm quietly optimistic.
Two years ago England crashed out of the European Championship in the first knockout round with a 2-1 defeat by Iceland after an abysmal performance. Midfielder Eric Dier on how far England have come since crashing out of Euro 2016.
All over the country, similar mass screenings are planned as England attempt to reach just the second World Cup final in their history.
Speaking to the BBC's World Cup Daily podcast earlier in the tournament, he said: "I'm slightly concerned because as a centre-half who took a lot of knocks to the head I'm not normally synonymous with fashion icons!