[Sony Xperia P, U, Sola, Go] SXUsr:
Give this a read before you begin - [GUIDE] Compiling framework-res without bootloop, and if you've never edited an apk this will be a big help in getting started - [Advice/Guide] APK Modding In 2013 Made Simple...

1. Decompile your framework-res.apk.

2. Go to your layout folder and open keyguard_screen_tab_unlock.xml then find and change the following lines...

<com.android.internal.widget.DigitalClock android:layout_gravity="right" android:id="@id/time" android:layout_marginTop="@dimen/keyguard_lockscreen_status_line_clockfont_top_margin" android:layout_marginRight="@dimen/keyguard_lockscreen_status_line_font_right_margin" android:layout_marginBottom="12.0dip">

...to...

<com.android.internal.widget.DigitalClock android:id="@id/time" android:layout_gravity="center_horizontal" android:layout_marginTop="100.dip" android:layout_marginBottom="3.0dip">

...then change this...

<LinearLayout android:layout_gravity="right" android:orientation="horizontal" android:layout_marginRight="@dimen/keyguard_lockscreen_status_line_font_right_margin">

...to this...

<LinearLayout android:layout_gravity="center_horizontal" android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="6.0dip">

...also change this...

<Button android:layout_gravity="right" android:id="@id/emergencyCallButton" android:visibility="gone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="4.0dip" android:layout_marginRight="16.0dip" android:text="@string/lockscreen_emergency_call" android:drawableLeft="@drawable/lockscreen_emergency_button" android:drawablePadding="4.0dip" style="?android:attr/buttonBarButtonStyle" />

...to this...

<Button android:layout_gravity="center_horizontal" android:id="@id/emergencyCallButton" android:visibility="gone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="4.0dip" android:text="@string/lockscreen_emergency_call" android:drawableLeft="@drawable/lockscreen_emergency_button" android:drawablePadding="4.0dip" style="?android:attr/buttonBarButtonStyle" />

...then change this...

<LinearLayout android:gravity="center" android:orientation="horizontal" android:layout_width="fill_parent" android:weightSum="2.0" style="?android:attr/buttonBarStyle">

...to this...

<LinearLayout android:gravity="center" android:visibility="gone" android:orientation="horizontal" android:layout_width="fill_parent" android:weightSum="2.0" style="?android:attr/buttonBarStyle">

3. Recompile and sign your framework-res.apk

4. Go to system/app and either delete, rename or remove all permissions for UxpNxtLockScreen.apk.

5. Replace your framework-res.apk on your Phone with the new one, reboot, done....

​

To also remove the operator logo as I have change this line...

<TextView android:textAppearance="?textAppearanceMedium" android:textSize="@dimen/keyguard_lockscreen_status_line_font_size" android:textColor="?textColorSecondary" android:ellipsize="marquee" android:gravity="center_horizontal" android:id="@id/carrier" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginBottom="12.0dip" android:singleLine="true" android:layout_alignParentBottom="true" />

...to...

<TextView android:textAppearance="?textAppearanceMedium" [B][COLOR="Red"]android:visibility="gone"[/COLOR][/B] android:textSize="@dimen/keyguard_lockscreen_status_line_font_size" android:textColor="?textColorSecondary" android:ellipsize="marquee" android:gravity="center_horizontal" android:id="@id/carrier" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginBottom="12.0dip" android:singleLine="true" android:layout_alignParentBottom="true" />