Yes, I was thinking about long-standing records. The most famous for your average sports enthusiast is Perry's Wimbledon one. Murray will for ever be remembered as the guy who broke it. If a whole sequence of British players come along in the future and win Wimbledon, that won't eclipse Murray's achievement as the guy who finally broke through.
Another that's closer to home for me is the British carp record. I used to waste quite a lot of time trying to catch carp and it was well known amongst anglers that Dick Walker's record from 1952 (44lb) was the one to beat. The fact that the fish was in London Zoo added to the frisson - it was my favourite exhibit when I was young. It died in 1971. It took until 1980 for Chris Yates to beat that, with a 51lb fish from the same lake. Since then, it has been broken several times, largely due to the commercialisation of carp fishing and the use of high-protein baits. I was chatting to a guy in our local park the other day and his personal best was a 41lb fish. When I was into carp fishing, that would have been an earth-shattering catch. Hardly anyone ever caught anything over 30lb but such fish are 2 a penny these days but I would imagine that Walker's fish remains the most famous. He was the pioneer (built his own rod out of split cane, which became a commercial success) when most anglers thought the carp was too difficult to waste time on.
I've just googled to find out the current record: 62lb 4oz!