Problem with header and footer for different margins

Question

I wanted to have all document with geometry parameters as follow:

\usepackage[top=1.5cm, bottom=2cm, left=2.5cm, right=1.25cm, includehead,includefoot, footskip=5mm,headsep=5mm]{geometry}

But the first page with the smaller left margin (1.25cm) so I defined new geometry for the first page. Everything works but the header and footer are moved to the right even when the right margin is set (but the text of section is ok).

but the first page (with new geometry is ok):

The code:

\documentclass[a4paper,11pt]{article}
\usepackage[top=1.5cm, bottom=2cm, left=2.5cm, right=1.25cm, includehead,includefoot,     footskip=5mm,headsep=5mm]{geometry}

%\usepackage[showframe]{geometry}
\usepackage{graphicx}
\usepackage{fancyhdr}           % fancy headers/footers
\usepackage[T1]{fontenc}
\usepackage{newtxtext,newtxmath}

% Use fancyheadings stuff
\fancypagestyle{mytitlestyle}{

%Set up new layouts values for title page
\renewcommand{\headheight}{30mm}

% Definition of the header
\renewcommand{\headrulewidth}{0.6pt}
\fancyhead[L]{\bf Number}
\fancyhead[R]{\includegraphics[width=57mm]{Logo}}
%defn of footer
\renewcommand{\footrulewidth}{0pt}
\fancyfoot[L]{\textbf{Title}}
\cfoot{\vspace*{5mm} \bf Page \thepage\ of \pageref{END}}
\fancyfoot[R]{\textbf{Version number}}
}

\fancypagestyle{mypagestyle}{

% Definition of the header
\renewcommand{\headrulewidth}{0.6pt}
\fancyhead[LO,RE]{\bf Number}
\fancyhead[RO,LE]{\bf Commercial in Confidence}
%
\renewcommand{\footrulewidth}{0.6pt}
\fancyfoot[LO,RE]{\textbf{Title}}
\cfoot{\vspace*{5mm} \bf Page \thepage\ of \pageref{END}}
\fancyfoot[RO,LE]{\textbf{Version number}}
}



\begin{document}
\thispagestyle{mytitlestyle}
\newgeometry{top=1.5cm, bottom=5cm, left=1.25cm, right=1.25cm, includehead,includefoot,     footskip=5mm,headsep=5mm}

 \setcounter{page}{1}
\begin{center}
\vspace*{20mm}
{\Large \textbf{TITLE}}\\
\vspace*{30mm}
{\large \textbf{ABSTRACT}}
\end{center}

\newpage
\pagestyle{mypagestyle}
\restoregeometry

\section{The First Section}
Text text text text text text text text text text text text text text text text text text text text     text text text text text.Text text text text text text text text text text text text text text text text text text text text text text text text text.Text text text text text text text text text text text text text 

\label{END}
\end{document} 

Answer 1

This shows how to create a title page using tikz. It takes two runs due to [remember picture].

It turns out that footskip=5mm is too small and the rule winds up inside the text area, so I increased it to footskip=10mm and reduced bottom accordingly. I still can't quite match \textheight or the footer spacing.

\documentclass[a4paper,11pt]{article}
\usepackage[top=1.5cm, bottom=1.5cm, left=2.5cm, right=1.25cm, includehead,includefoot, footskip=10mm,headsep=5mm]{geometry}

%\usepackage[showframe]{geometry}
\usepackage{tikz}
\usepackage{fancyhdr}           % fancy headers/footers
\usepackage[T1]{fontenc}
\usepackage{newtxtext,newtxmath}

% Use fancyheadings stuff
\fancypagestyle{mypagestyle}{

% Definition of the header
\renewcommand{\headrulewidth}{0.6pt}
\fancyhead[LO,RE]{\bf Number}
\fancyhead[RO,LE]{\bf Commercial in Confidence}
%
\renewcommand{\footrulewidth}{0.6pt}
\fancyfoot[LO,RE]{\textbf{Title}}
\cfoot{\vspace*{5mm} \bf Page \thepage\ of \pageref{END}}
\fancyfoot[RO,LE]{\textbf{Version number}}
}

\begin{document}
\thispagestyle{empty}
\begin{tikzpicture}[remember picture, overlay]
\path(current page.north) ++(0pt,-1.5cm)% header (top)
  node[below,inner sep=0pt,text width={\paperwidth-2.5cm}]{\rule{0pt}{30mm}% strut
    \textbf{Title}\hfill\smash{\includegraphics[width=57mm]{example-image}}};% \smash in case logo doesn't fit

\draw[line width=0.6pt] (current page.north west) ++(1.25cm,-4.75cm) -- ++(\paperwidth-2.5cm,0pt);

\path(current page.north) ++(0pt,-5cm)% text area
  node[below, inner sep=0pt]{\parbox[c][\dimexpr \paperheight-7.5cm][t]{\dimexpr\paperwidth-2.5cm}{%
\begin{center}
\vspace*{20mm}
{\Large \textbf{TITLE}}\\
\vspace*{30mm}
{\large \textbf{ABSTRACT}}
\end{center}}};

\draw[line width=0.6pt] (current page.south west) ++(1.25cm,1.75cm+0.5\baselineskip) -- ++(\paperwidth-2.5cm,0pt);

\path(current page.south) ++(0pt,1.5cm)% footer (baseline)
  node[above, inner sep=0pt, text width={\paperwidth-2.5cm}]{%
    \rlap{\textbf{Title}}\hfill
    \raisebox{-8mm}[0pt][0pt]{\bf Page \thepage\ of \pageref{END}}\hfill
    \llap{\textbf{Version number}}};
\end{tikzpicture}
\newpage
\pagestyle{mypagestyle}

\section{The First Section}
Text text text text text text text text text text text text text text text text text text text text     text text text text text.Text text text text text text text text text text text text text text text text text text text text text text text text text.Text text text text text text text text text text text text text 

\the\textheight\par
\the\dimexpr \paperheight-5cm\relax
\label{END}
\end{document}