It's very easy accumulate points sometimes, on a journey last week I met 5 speed vans, all on the outskirts of small towns and all between the 50 & 60 limits. Yes I know we should all drop down speed immediately but I got caught a few years ago doing 55 in one of these zones, I was within sight of the 60 limit and it was not what I would call a built up area, very much the outskirts. The irony is I would never pass 100 on open road, I am not a fast driver at all, yes I know awful things happen at low speeds too but they really do seem to be positioned to pick the low hanging fruit.
Some places have very strange limits, there is a big new stretch of road outside Newcastlewest with a limit of I think 60 for a long distance, I'm there driving along under the limit with buses, lorries and every car overtaking me!
My insurer said they ignore up to 3 points so the 6 might cause you a problem but insurers differ so shop around.