National Westminster Bank is a Grade II listed building in the Powys local planning authority area, Wales. First listed on 10 April 1989. Bank. 1 related planning application.

National Westminster Bank

WRENN ID
hidden-cinder-fog
Grade
II
Local Planning Authority
Powys
Constituency
Montgomeryshire and Glyndwr MP: Steve Witherden (Lab)
Country
Wales
Date first listed
10 April 1989
Type
Bank
Address
National Westminster Bank, 36 Great Oak Street, Llanidloes, SY18 6BN
OS grid reference
SN 954 845
Coordinates
52.44846, -3.54012
Source
Cadw listing

Also on this page: related consents · flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The National Westminster Bank is a two-storey building featuring half-timbered close studded elevations. It has three bays facing Great Oak Street and China Street, with one bay splayed across the corner. The building sits on a rubble plinth and has a steep slate roof with wide eaves. Red brick chimney stacks and Tudor-style lead guttering and downpipes, which are initialled NPB, add to its character. There are finials over the hipped corner and splayed projections at the centre of both sides. The splayed bay on the main front is full height and incorporates the main entrance, while the splayed bay on the China Street side features a bracketed oriel. The narrow casement windows of various widths have leaded lights. The main entrance is camber arched with panelled double doors. A bank sign is located on the corner, accompanied by decorative ironwork. There is also a low segmental headed doorway on the right side of the China Street front, which has a 9-panelled part glazed door with a carved timber tympanum that intertwines the date with foliage. Narrow brick strips at either end indicate that the gable ends are not half-timbered.

Inside, the ground floor boasts massive stop-chamfered beams framed in both directions. The walls are post and muntin panelled up to a dentil cornice at three-quarters height, featuring various plaster ornamentation above and on the ceiling. There is a panelled counter front with strapwork on the pilasters, and a chamfered pier in the middle of the office area is accessed through a doorway with panelled pilasters and reveals, along with balusters leading to half-glazed inner doors. The separate flat accommodation above is said to retain similar details.

Local climate

National Westminster Bank sits in one of the wettest parts of the UK, with an average of 1,180 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.

It experiences an average of 53 freeze-thaw cycles a year, more than 94% of listed buildings. Of these, 32 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.

Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.

More on this building

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  • No EPC on record for this property
  • No sale records on file
  • Related listed building consents — 1 application
  • Detailed attributes — period, style, materials, features
  • Flood risk assessment
  • Radon risk assessment
  • Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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