Unable to resolve domain using Cloudflare 1.1.1.1

I am unable to resolve the following domain name on Cloudflare DNS 1.1.1.1. I am able to resolve same on google DNS 8.8.8.8.

C:\Users\FOWOSIREO>nslookup gvw.centrica.com 1.1.1.1
Server: one.one.one.one
Address: 1.1.1.1

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to one.one.one.one timed-out

C:\Users\FOWOSIREO>nslookup gvw.centrica.com 8.8.8.8
Server: dns.google
Address: 8.8.8.8

Non-authoritative answer:
Name: gvw.fjext.centrica.com
Address: 194.176.192.153
Aliases: gvw.centrica.com

What about

nslookup -type=cname gvw.centrica.com 1.1.1.1

I can resolve the CNAME

C:\Users\FOWOSIREO>nslookup test.fjext.centrica.com 1.1.1.1
Server: one.one.one.one
Address: 1.1.1.1

DNS request timed out.
timeout was 2 seconds.
DNS request timed out.
timeout was 2 seconds.
*** Request to one.one.one.one timed-out

C:\Users\FOWOSIREO>nslookup -type=cname gvw.centrica.com 1.1.1.1
Server: one.one.one.one
Address: 1.1.1.1

Non-authoritative answer:
gvw.centrica.com canonical name = gvw.fjext.centrica.com

In this case gvw.centrica.com is fine and the issue is gvw.fjext.centrica.com.

It would seem as if the fjext.centrica.com domain has some DNS configuration issus
https://dnsviz.net/d/fjext.centrica.com/dnssec/

Yes I have run a report on dnsviz.net and I have enabled dnssec config for the zone fjext.centrica.com. Does CloudFare enforce DNSSEC?

Enforce, no but verify. If you have DNSSEC on it need to be correct of course.