FORM 6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Report of Foreign Issuer

Pursuant to Rule 13a-16 or 15d-16 of

Securities Exchange Act of 1934

For the month of April 2018

SANTANDER UK PLC

(Translation of registrant’s name into English)

2 Triton Square, Regent’s

Place, London NW1 3AN, England

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  ☒            Form 40-F  ☐

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes  ☐             No  ☒

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	SANTANDER UK PLC
Dated: 26 April 2018	By	/ s / Marc Boston
	(Authorised Signatory)

Supplementary consolidated information for Santander UK plc and its controlled entities

Santander UK plc is the principal subsidiary of Santander UK Group Holdings plc. The summarised consolidated income statement, summary of segmental balance sheet assets and liabilities and summarised consolidated capital for Santander UK plc and its controlled entities are shown below.

The information in this Appendix is unaudited and does not constitute statutory accounts within the meaning of section 434 of the Companies Act 2006 or interim financial statements in accordance with International Accounting Standard 34 ‘Interim Financial Reporting’. The information in this Appendix has been prepared in accordance with Santander UK plc’s accounting policies described in its 2017 Annual Report on Form 20-F for the year ended 31 December 2017 filed with the SEC on 7 March 2018, except for the effects of the adoption of IFRS 9 with effect from 1 January 2018, as described in Note 1 to the Consolidated Financial Statements in the 2017 Annual Report

Summarised consolidated income statement	Q118 £m			Q117 £m
Net interest income		906			940
Non-interest income 1		245			265
Total operating income		1,151			1,205
Operating expenses before credit impairment losses, provisions and  charges		(648	)		(607	)
Credit impairment losses		(60	)		(13	)
Provisions for other liabilities and charges		(28	)		(60	)
Total operating impairment losses, provisions and charges		(88	)		(73	)
Profit before tax		415			525
Tax on profit		(120	)		(154	)
Profit after tax for the period		295			371
Summary of segmental balance sheet assets and liabilities	31.03.18 £bn			31.12.17 £bn
Customer loans
Retail Banking		170.6			169.0
Commercial Banking		19.3			19.4
Global Corporate Banking		6.0			6.0
Corporate Centre		5.6			5.9
Total customer loans		201.5			200.3
Other assets		109.0			114.5
Total assets		310.5			314.8
Customer deposits
Retail Banking		148.2			149.3
Commercial Banking		17.3			18.7
Global Corporate Banking		3.6			4.5
Corporate Centre		3.3			3.4
Total customer deposits		172.4			175.9
Medium Term Funding 2		43.1			40.6
Other liabilities		78.7			82.0
Total liabilities		294.2			298.5
Shareholders’ equity		16.1			16.1
Non-controlling interests		0.2			0.2
Total liabilities and equity		310.5			314.8
Summarised consolidated capital	31.03.18 £bn			31.12.17 £bn
Capital – CRD IV
Total qualifying regulatory capital		16.6			17.1
Risk-weighted assets (RWAs)		85.3			87.0
Total capital ratio		19.5	%		19.7	%

1. Comprised of ‘Net fee and commission income’ and ‘Net trading and other income’.

2. Medium Term Funding includes downstreamed funding, in the form of loans that rank pari passu with existing senior unsecured liabilities, from Santander UK Group Holdings plc.

Disclaimer

Santander UK plc (Santander UK) and Banco Santander both caution that this announcement may contain forward-looking statements. Such forward-looking statements are found in various places throughout this announcement. Words such as “believes”, “anticipates”, “expects”, “intends”, “aims” and “plans” and other similar expressions are intended to identify forward-looking statements, but they are not the exclusive means of identifying such statements. Forward-looking statements include, without limitation, statements concerning our future business development and economic performance. These forward-looking statements are based on management’s current expectations, estimates and projections and both Santander UK and Banco Santander caution that these statements are not guarantees of future performance. We also caution readers that a number of important factors could cause actual results to differ materially from the plans, objectives, expectations, estimates and intentions expressed in such forward-looking statements. We have identified certain of these factors in the forward looking statements on page 233 of the Santander UK plc 2017 Annual Report. Investors and others should carefully consider the foregoing factors and other uncertainties and events. Undue reliance should not be placed on forward-looking statements when making decisions with respect to Santander UK, Banco Santander and/or their securities. Such forward-looking statements speak only as of the date on which they are made, and we do not undertake any obligation to update or revise any of them, whether as a result of new information, future events or otherwise. Statements as to historical performance, historical share price or financial accretion are not intended to mean that future performance, future share price or future earnings for any period will necessarily match or exceed those of any prior quarter. Nothing in this Quarterly Management Statement should be construed as profit forecast.

Santander UK is a frequent issuer in the debt capital markets and regularly meets with investors via formal roadshows and other ad hoc meetings. In line with Santander UK’s usual practice, over the coming quarter it expects to meet with investors globally to discuss this Quarterly Management Statement, the results contained herein and other matters relating to Santander UK.