I think some people need to calm down a little bit,
YES the board looks crap, yes, there's a 6 amp circuit for the cooker, yes he's left far to much copper showing on incoming tails, yes there appears to be no rcd and NO I wouldn't recommend you change the mcb yourself, but some people are making it sound like the house is about to burn down at any minute, which is rediculous, 30 years ago barely any houses had an rcd fitted, and alot i go to still dont, but guess how many 30+ year old houses are still standing... many would be my guess.
Realistically if you supplied the mcb yourself an electrician would come and fit in under 15 minutes, including the relevant checks and tests, so max £40 maybe