Hello and Welcome to OpenStreetMap.
Can you give more details of the guest house, address, website, property located in.
Features added to the OSM database must be verifiable on the ground and there's not enough info to determine this features position, (in a front garden). So it ought to be corrected or removed.
Regards Bernard

Hi I removed the school POI, info is already on the building outline. Regards

Hello and Welcome to OpenStreetMap.
If this facility is a dental clinic, as you say plus coming to this conclusion after looking at the website, then it should be tagged as amenity=dentist not amenity=hospital.
Anyone searching OSM maps for a dentist would not find your facility if it's tagged as a hospital, and vice versa.
Regards Bernard.

Hello and Welcome to OpenStreetMap.
Firstly it is unlikely a hotel would be situated in the middle of a street. You have not given enough information (not even a name) for anyone to determine where the hotel is situated. You've placed a poor attempt at a post code in the house-number field.
Could you please amend or remove this POI as it's of no use to the OSM database? If you need help with correctly mapping the hotel please just ask here in the comments.
I await your response, if no response I'll remove the POI in due course.
Regards Bernard

No response so building in building removed.

Hello and Welcome to OpenStreetMap.
I changed building=yes to office=accountant and added the website and phone number. Hope that's OK, Regards Bernard

Hi good to see you've removed the POI and added a feature. I've made minor amendments to go along with OSM best practice, (removed retail area tag from within existing retail tagged area), then added a building tag to the featusr so folk know what it is.
Many Thanks & Regards Bernard

Hello and Welcome to OpenStreetMap.
I've added 'disused:amenity=place_of_worship' and
'disused:religion=christian' tags to the library. Also a 'note=Formerly a Congregational Church built in 1842'. This is in order to show the historic use of the building and the history of OSM tagging.

As you say the library is part of the school then the school grounds (Way: Caistor Grammar School (264249731)) ought to be extended to include it. It should be ascertained if the adjacent burial ground is also now within the school grounds before the outline way is adjusted.

Regards Bernard

It also included a very long section of highway, (obviously not grass). No response from mapper so I've removed it.

Way: 529654162
Hi, this area is houses and their gardens, not grass. Could you please amend it to reflect what is on the ground?
Regards Bernard

Way: 530247646
Hi, I removed the self intersection from the outline of this feature.

Way: 530294700
Hi, I removed the self intersection from the outline of this feature.

Way: 530278912
Hi, I removed the self intersection from the outline of this feature.

Hi and Welcome to OpenStreetMap.
I just made the maze a circle shape, hope you'll agree it looks neater.
Regards Bernard

Hello and Welcome to OpenStreetMap.
A few anomalies.
You have managed to triplicate the outline of this building.
Only the original outline is tagged building=yes, your two new outlines are not tagged to show what the feature is.
There seems to be another company operating from this building with a different post code to yours.
Your tagging indicates you occupy the whole building.
Do you share the building? In which case a POI would better indicate your company presence.

The triplication of the outline needs to be addressed.

Regards Bernard

Hello and Welcome to OpenStreetMap.
The OSM tag wheelchair:description is not meant to hold a note on a business closure but rather a description of the details of wheelchair access to a feature.

Better tags for a closed or vacant shop are disused:shop=yes (to indicate a business has closed) and/or shop=vacant (if the shop awaits new owner and or change of use as a shop).
The new business would then be surveyed for wheelchair access.
Regards Bernard

Hello, the name tag is meant for the proper name of a feature rather than a description of that feature. The name for the area (Greenbank Gardens) is stated/tagged on the overall feature and thus need not be stated several times. I've changed the several names on features to description**=* instead.
Regards Bernard

Hello, regarding Way: 530037149 and Way: 530037879 tagged landuse=grass, it looks like a large proportion of these areas are not in fact areas solely of grass. They encompass houses, drives and many domestic gardens. Further the two outlines are self-intersecting ways.
Regards Bernard

Hello and Welcome to OpenStreetMap.
I've removed this data because the company is not at this location, so the information is at best misleading. The location is someones dwelling but the address looks wrong. Also the name field usually holds the name of the feature, D***** B***** looks like a persons name.
If I can help you get the adding info to OSM please just ask.
Regards Bernard

Hello and Welcome to OpenStreetMap.
Just checking on new features added to OSM because I notice you add an enclosed area instead of a POI, (that enclosed area being inside an existing building). We want to keep OSM as the best map database worldwide.
I further checked to verify the map position and company address. I see there is no FENSA registration number listed on the stated website. A check with FENSA and I could not find 'Emergency Glazing London' registered, nor any reference from the address or postcode.
My apologies if I am wrong but this seems to be a bit misleading, could you explain the situation please?
Regards Bernard