According to Official Guinness Records,
The world record for the most durable blooper presenter is Denis Norden C.B.E (b. 6 February 1922, UK). He has presented a blooper show for 29 years. He started with the first edition of It’ll be Alright on the Night on 18 September 1977 and presented his last show All the Best from Denis Norden in September 2006.
For a complete list of 2006 records, please visit 2006 Guinness Records in United Kingdom.