According to the BBC:

[audission]

http://news.bbc.co.uk/1/hi/england/cornwall/5223142.stm

"Experts have clashed over the existence of Great White Sharks off the UK coast.
Speculation is mounting amid a series of claimed sightings by holidaymakers and fishermen and a new documentary on BBC One on Sunday."

Strikes me that fishermen and tourists are probably two of the most unreliable sorts of witnesses out there - the former because of the "you should have seen it" factor, the latter because they rarely see the sea at all.

So, any divers seen any large predators then? Someone at my dive club said they saw Orcas off the Isle of Man last week. :hideing_b :butnhome:

 

[Jason Ooi]

Thanks for sharing

 

[String]

These great white stories appear reliably every single year from April onwards. Not once have they been confirmed or dismissed. Its possible GWS are around but in reality nobody has proven it. This rumour will vanish in a month or two and reappear next spring again.

 

[DORSETBOY]

Deff nice to think there are some BIG fish off our coasts. Tink it was last year there were carcasses of porpoises and seals found along the berwickshire coast which were supposed to have been attacked and killed by mako sharks. Certainly keep my eyes open atst abbs!

 

[dbulmer]

I heard those seals are friendly

 

[jiveturkey]

Who are the fisherman? Are they recreational or commercial? Commercial fisherman spend a lot of time on the sea and are usually a good source.

 

[DORSETBOY]

string, you teaching with europeandivers by any chnce?

 

[Mark Milburn]

http://news.bbc.co.uk/1/hi/england/cornwall/5223142.stmSomeone at my dive club said they saw Orcas off the Isle of Man last week.

2 Years ago I saw 2 orcas off the Cornish coast 6 miles out of St.Ives just before we went in. We just sat and watched until they were out of sight.

 

[Bali Diver]

Last week or so possible Great white sighting down Cornwall way,some photos of huge fin in papers,nothing like the basking sharks which you can see down there and imagine there has to be some around UK waters.

 

[audission]

I thought this had been discredited now. A dead Porbeagle washed up for starters:

http://news.bbc.co.uk/1/hi/england/cornwall/6938220.stm

...and then one of the guys who had footage admitted he'd shot it in South Africa:

http://news.bbc.co.uk/1/hi/england/cornwall/6938220.stm