Use the full area code before the local subscriber number.
UK geographic telephone code
018903 area code: Coldstream
The 018903 dialling code is associated with Coldstream.
How to dial Coldstream
Use +44 and remove the leading zero from the area code.
An area-code match describes the number range, not the caller's identity or current physical location. Caller ID can also be spoofed.
Recent reports for 018903 numbers
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Probably either a nuisance call or a scam call?
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Pretend to be calling from O2 offering free upgrades. Scam.
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Suspected spam
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Apparently from Coldstream, Scotland. Made no sound when I picked up
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Scammers pretending to be from EE
Source and review
This page uses Ofcom telephone area codes area-code information retrieved on 3 September 2026.