Church Lane coming off of Church Lane. One is the A312, the other is just Church Lane.
Google is wrong on this, they're both called Church Road. And historically they were the same thing, but as it evolved from a way to get to the church to a market thoroughfare one main road emerged and left the other road as a side road. Over time this actually led to both roads being distinct, and with their own door numbering schemes, even though they meet each other.
I find the history of places as fascinating as the history of languages.
The town I grew up in had a Something St that at the top of the hill changed to a different street. A street also called Something St. Both have the same postcode. There are many duplicate house numbers.
I think they were originally separate unjoined streets. But a road was built up the hill, joining them together. I guess people couldn't agree on who should have their houses renumbered.
If manually specifying the address you probably have enough wiggle room to specify which 10 Something St you mean. I've encountered systems online that will try to normalize and correct street addresses to an official format... I could imagine that these would cause problems.
(And don't confuse those addresses with the 10 New Something St, or 10 Something Rd, both of which are only a few hundred meters away.)
The postcode and door number (or even street) is not enough in the uk unless you are in a town (and even then not always). Look up some rural postcodes, or blocks of flats with names rather than a number.