PB355 was one of 17 Lancasters of 49 Squadron from RAF Fulbeck, Lincolnshire on their way to bomb Munich. Accounts vary but I've discovered it was carrying a standard bomb load of one 4,000 lb "Cookie" plus incendiaries & was in some sort of trouble soon after taking off. The beach was still mined & the crew of seven were all killed when it exploded on contact. Only one body was ever found & by a miracle nobody on the ground was hurt. Just seven of over 55,000 aircrew from RAF Bomber Command to lose their lives on operations during WWII.
There's a memorial plaque to the crew on Worthing Pier. I went down there this morning hoping that someone would be there paying their respects. Unfortunately I never saw anyone but I took a few photos as a small tribute to these brave men.
This is the plaque.

The view looking west from the pier. The aircraft exploded on the beach somewhere to the left of the line of white beach huts in the distance.

According to reports the crippled Lanc just missed the Plaza cinema which was crowded with cinemagoers watching a Spencer Tracy film, ironically named The Seventh Cross. They didn't realise how lucky they were. The building with the awful blue front is what the cinema looks like today. It's now a Bingo hall but hasn't changed much since 1944.

This is Heene Terrace south of the cinema & just north of where the bomber came down. Taken from in front of the white beach huts I mentioned earlier. These wouldn't have been here in 1944.

I took this standing close to the crash site looking back towards the pier.

Another interesting snippet is that it was one of several 49 Squadron Lancasters fitted with the top secret "Village Inn" rear gun turret. This was undergoing testing at the time which was a very risky business. http://www.bomberhistory.co.uk/49squadron/Files/Village%20Inn.pdf
More info on the crash here. http://www.bomberhistory.co.uk/49squadron/Memorials/Memorial_Worthing%20Pier.html